An In-Depth Analysis of International High School Options in Bangkok for a Grade 10 Transition

Part I: Strategic Overview for a Successful Transition

1.1. Introduction: Framing the Decision

The selection of an international school, particularly for a student
entering the critical high school years, is one of the most significant
decisions a family can make. This report provides a comprehensive,
data-driven analysis of the 20 leading international schools in Bangkok,
tailored to the specific profile of a 15-year-old student transitioning
from the Japanese educational system. The objective extends beyond a
simple ranking; it is a bespoke advisory designed to identify the
institution that offers the optimal synthesis of academic rigor, robust
linguistic support, and a nurturing community to ensure a successful and
fulfilling educational journey. The analysis that follows is structured
to deconstruct the complex landscape of Bangkok's international
education sector, providing clarity and strategic guidance. It evaluates
each institution not only on its standalone merits but on its specific
suitability for a student with the distinct academic background and
language proficiency outlined in the student profile.

1.2. Analyzing the Student Profile

A successful placement requires a nuanced understanding of the
student's starting point. The two most critical factors are the
academic transition from a Japanese curriculum and the current level of
English language proficiency.

Academic Transition

The transition from the Japanese Grade 9 (中3) curriculum to a Western
international system represents a significant pedagogical shift. The
Japanese system is renowned for its rigor and emphasis on deep content
knowledge and mastery. In contrast, premier international curricula,
particularly the International Baccalaureate (IB) and Advanced Placement
(AP) programs, are founded on an inquiry-based learning model. This
model prioritizes critical thinking, independent research, analytical
writing, and collaborative problem-solving. While the student's strong
academic foundation from the Japanese system is an asset, she will need
to adapt to a new style of learning that demands active participation,
frequent argumentation, and the construction of knowledge rather than
its passive reception. The ideal school will have a structured academic
and pastoral support system to guide students through this pedagogical
adjustment.

Language Proficiency Assessment

The student's English proficiency is at the Eiken Grade 2 level.
According to the Eiken Foundation of Japan and international equivalency
standards, this corresponds to the B1 (Threshold) level on the Common
European Framework of Reference for Languages (CEFR).^1^ A student at
the B1 level can understand the main points of clear standard input on
familiar matters and can produce simple connected text on topics that
are familiar or of personal interest.^3^ In practical terms, this
indicates a solid foundation in conversational English and the ability
to handle everyday situations.

However, the language required for academic success in a Grade 10 IB,
AP, or IGCSE classroom is substantially more demanding. This "Cognitive
Academic Language Proficiency" (CALP) involves understanding complex,
abstract, and technical vocabulary across a range of subjects, from
literary analysis in English to scientific principles in Biology. A B1
level is typically insufficient for immediate, unsupported access to
such a curriculum. Therefore, the availability and quality of an English
as an Additional Language (EAL) program is not merely a desirable
feature but the single most critical determinant of a successful
transition. Many of Bangkok's most elite schools have stringent English
proficiency requirements for entry into their high school programs, a
factor that will be a central theme of this report's analysis.^4^

1.3. Key Decision Vectors

This analysis is structured around three primary pillars to determine
the best institutional fit:

Academic Alignment: The report will evaluate the curriculum
offerings (IB, AP, A-Levels), academic ethos, and university
placement records of each school to align with the student's
learning style and long-term higher education goals. The preference
for the IB Diploma Programme, with AP as an acceptable alternative,
will guide the primary focus.
Linguistic Viability: This is the most crucial vector. The
report will conduct a deep-dive analysis of each school's high
school EAL program, scrutinizing its entry requirements, support
model (e.g., pull-out classes, in-class co-teaching), and capacity
to effectively and efficiently elevate a B1-level student to the
B2/C1 proficiency required for academic success.
Holistic Integration: A successful transition is not solely
academic. The report will assess each school's culture, community
size, student demographics, pastoral care systems, and
extracurricular offerings to identify an environment where the
student can thrive socially and emotionally, build confidence, and
integrate smoothly into a new cultural context.

Part II: The Premier Tier: Bangkok's Leading International Schools

This section provides an in-depth analysis of the institutions widely
regarded as the "Tier 1" international schools in Bangkok. These
schools are distinguished by their long histories, non-profit status,
extensive facilities, and consistently outstanding academic results.^6^
While they represent the pinnacle of international education in
Thailand, their admissions processes and EAL programs are highly
selective, particularly for high school entry.

2.1. NIST International School

Profile: Established in 1992, NIST International School is a
non-profit institution renowned for being Thailand's first full
International Baccalaureate (IB) World School.^8^ Centrally located in
the Sukhumvit area, it is easily accessible and serves a diverse
community of over 1,800 students from more than 90 nationalities,
fostering a truly global perspective.^9^ The school is celebrated for
its inclusive, welcoming community and is free from any single
philosophy or creed, focusing instead on the IB's learner-centric
approach.^8^
Academics: NIST is one of only a few schools in Bangkok to offer
all four IB programmes: the Primary Years Programme (PYP), Middle
Years Programme (MYP), Diploma Programme (DP), and the Career-related
Programme (CP).^9^ This exclusive dedication to the IB framework
creates a deeply embedded, concept-based curriculum that is cohesive
from early years through to graduation. The school's academic results
are exceptional, with students consistently achieving IB Diploma
scores well above global averages. The average IB Diploma score is
36-37 points, with a 100% pass rate and 56% of graduates earning a
bilingual diploma, reflecting a strong commitment to
multilingualism.^9^
EAL Analysis: NIST has a well-resourced English as an Additional
Language (EAL) department, which it refers to as the English Language
Acquisition (ELA) programme in the secondary school. However, the
school explicitly states that due to the high curricular demands, it
is only able to support intermediate and advanced level English
language learners in the secondary school.^4^ This policy presents a
significant potential barrier for a student with a CEFR B1 level of
English. Admission would be contingent on the school's internal
assessment deeming her proficiency as "intermediate" by their
standards, which may be set at a high bar. The school may limit the
number of ELA students in each grade level to maintain high English
standards throughout the school.^4^
Admissions: NIST welcomes applications from international families
throughout the year, contingent on space availability; however, wait
pools are common in many year levels due to high demand.^13^ The
admissions process is comprehensive, beginning with an online
pre-application form, followed by a full application that incurs a
non-refundable THB 6,000 fee.^14^ Shortlisted candidates are then
invited for an admissions assessment, which carries an additional THB
2,500 fee. The admissions committee considers multiple factors,
including English proficiency, previous school records, and IB
programme experience.^13^
Verdict: NIST represents the gold standard for a pure IB education
in Bangkok. Its academic excellence, diverse community, and extensive
extracurricular offerings (over 300 activities) are unparalleled.^8^
However, its stringent EAL intake policy for secondary students is a
major consideration. While the school should be considered, securing a
place is highly dependent on the outcome of their English proficiency
assessment.

2.2. International School Bangkok (ISB)

Profile: As Thailand's first international school, founded in
1951, ISB has a rich heritage and a reputation for excellence.^8^ It
operates as a non-profit school on a large, modern suburban campus in
Nonthaburi, just outside the city center.^10^ The campus features
world-class facilities, including professional-grade theaters, design
and robotics labs, and a unique Environmental Wilderness Campus (EWC)
for outdoor education.^15^ The school fosters a diverse and inclusive
community with students from over 60 nationalities.^15^
Academics: ISB offers a uniquely flexible and comprehensive
academic program. Its curriculum is based on a US framework and is
accredited by the Western Association of Schools and Colleges (WASC),
but it also offers both the full IB Diploma Programme (DP) and a wide
range of Advanced Placement (AP) courses.^8^ This dual-pathway system
in Grades 11 and 12 provides students with exceptional choice and
allows them to tailor their studies to best suit their strengths and
university aspirations, whether in the US, UK, or elsewhere.
EAL Analysis: ISB's English as an Additional Language (EAL)
program is designed to help multilingual learners succeed academically
and socially. The support model is robust, featuring co-teaching with
subject specialists and dedicated English for Academic Purposes (EAP)
classes.^5^ However, mirroring NIST's policy, ISB states that
due to the academic rigor in the high school years, it only accepts
students at the Intermediate or Advanced EAL levels.^5^ Admission
for a B1-level student would depend entirely on their performance in
ISB's English proficiency assessment and whether they meet this
"Intermediate" threshold. Furthermore, ISB's support services are
managed by capacity, and the school is unable to accept students who
require dual support in both EAL and Learning Support programs
simultaneously.^17^
Admissions: The admissions process is managed through a dedicated
online portal, OpenApply, and is designed to be seamless for
relocating families.^15^ The process includes submission of extensive
documentation, payment of an application fee, standardized assessments
(which can be done online or on-site), and online interviews for both
parents (for younger students) and the student (for Grades 6-12).^18^
ISB has distinct application streams for Expat, Thai, and
Dual-nationality families.^19^
Verdict: ISB is an exceptional institution offering unparalleled
academic flexibility with its dual IB and AP pathways. Its facilities
and long-standing reputation are second to none. The primary
challenge, as with NIST, is the high English proficiency requirement
for high school admission. The outcome of their language assessment
will be the definitive factor in determining eligibility.

2.3. Bangkok Patana School (BPS)

Profile: Founded in 1957, Bangkok Patana School is the oldest
British international school in Thailand and is consistently ranked
among the top three schools in the country alongside NIST and ISB.^7^
It is a large, non-profit institution with over 2,250 students on a
sprawling campus in the Bang Na district.^10^ The school is known for
its strong sense of community, academic rigor, and extensive
extracurricular and sports programs.^20^
Academics: BPS provides a British-style education that follows the
English National Curriculum, leading to the International General
Certificate of Secondary Education (IGCSE) in Years 10 and 11.
Following the IGCSEs, students progress to the IB Diploma Programme
(DP) or the IB Career-related Programme (CP) in Years 12 and 13.^10^
This structured pathway provides a very strong foundation for the
demands of the IB. The school's academic results are outstanding,
with a 99% IBDP pass rate and an average score of 35.^20^
EAL Analysis: BPS has a well-structured EAL program. In Key Stage
3 (Years 7-9), students needing support receive two hours of separate,
focused language instruction per week in addition to in-class support
from specialist Language Acquisition teachers and English Language
Facilitators.^22^ This model appears robust and well-resourced. The
critical juncture for a new student would be entry into Year 10, which
marks the beginning of the demanding two-year IGCSE course. The school
will conduct an English language assessment for all non-native
speakers to determine their ability to access the curriculum and the
level of support required.^23^ While a specific CEFR entry level is
not stated, the structured nature of their program may make it more
accessible than schools with a strict "intermediate/advanced only"
policy.
Admissions: BPS accepts applications from non-Thai students
throughout the year, but it is important to note that many year groups
have waiting lists due to high demand.^23^ Prospective families are
advised to contact the admissions office to check for availability
before applying.^23^ The process involves submitting an online
application with all required documents, after which the school will
arrange any necessary assessments, which can be conducted remotely at
the student's current school if the family is overseas.^23^
Verdict: Bangkok Patana is an academic powerhouse that offers a
superb, structured route to the IB Diploma. The two-year IGCSE program
provides an excellent preparatory stage. Its EAL program appears
well-organized, making it a potentially more viable Tier 1 option.
However, securing a place can be challenging due to waiting lists, and
admission will depend on their assessment of the student's ability to
cope with the IGCSE curriculum.

2.4. Shrewsbury International School, Riverside

Profile: Established in 2003, Shrewsbury International School has
quickly earned a reputation as one of Bangkok's leading academic
institutions.^8^ Its iconic, purpose-built campus is situated on the
banks of the Chao Phraya River, providing a unique and inspiring
learning environment.^8^ The school serves a community of
approximately 1,736 students from 40 different nationalities.^8^
Academics: Shrewsbury follows the English National Curriculum,
culminating in IGCSE examinations in Year 11 and A-Levels in Years 12
and 13.^8^ While this is not the preferred IB curriculum, A-Levels are
a globally recognized "gold standard" qualification highly respected
by top universities worldwide, particularly in the UK. A-Levels allow
for greater specialization than the IBDP, as students typically focus
on only 3-4 subjects. The school's academic results are exceptional,
with graduates consistently gaining admission to the world's most
selective universities, including Oxford, Cambridge, and Ivy League
institutions in the US.^28^
EAL Analysis: The provided research materials highlight
Shrewsbury's academic achievements and world-class facilities but
lack specific, publicly available details about the structure, intake
level, and support model of its English as an Additional Language
program for high school students. Given the school's high academic
standards, it is probable that a strong level of English proficiency
is required for entry into the IGCSE program in Year 10. The absence
of this information is a significant gap that necessitates direct and
detailed inquiry with the school's admissions department.
Admissions: The application process requires the submission of a
completed form, all supporting documents (including school reports
from the previous two academic years), and a non-refundable
application fee of THB 5,000.^29^ The school requires full disclosure
of any special educational needs at the time of application. The
process will include an assessment to determine suitability.
Verdict: Shrewsbury is an outstanding academic institution and a
top-tier choice for families considering the A-Level pathway. The
school's track record of university placements is impeccable.
However, its suitability for this particular student is entirely
contingent on the nature of its high school EAL support, which must be
thoroughly investigated before proceeding with an application.

2.5. Harrow International School Bangkok

Profile: As a member of the prestigious Harrow family of schools,
which dates back to 1572 in the UK, Harrow International School
Bangkok offers a traditional British day and boarding school
experience.^8^ Located on a spacious, 35-acre green campus in the Don
Mueang district, the school provides a secure and well-resourced
environment for its 1,500 students.^8^
Academics: The school follows the English National Curriculum,
preparing students for IGCSEs and, subsequently, A-Levels in the Sixth
Form.^27^ The curriculum is complemented by Harrow's "Leadership in
Action" program, which emphasizes the development of character,
resilience, and teamwork through a wide range of extracurricular
activities.^30^ The school boasts excellent examination results and a
strong record of placing students in leading universities
globally.^30^
EAL Analysis: Similar to Shrewsbury, the publicly available
information does not provide granular detail on the structure or entry
requirements for Harrow's high school EAL program. The admissions
process involves assessments in English and mathematics, which will be
used to gauge a candidate's ability to access the curriculum.^31^
Given the academic demands of the IGCSE courses starting in Year 10, a
significant level of English proficiency is likely expected.
Clarification from the admissions team regarding their capacity to
support a B1-level student is essential.
Admissions: Prospective families must submit an application form
with supporting documents and a non-refundable application fee of THB
5,000 prior to an assessment being scheduled.^32^ Assessments are now
conducted online and are followed by an interview. The school also
offers boarding options from Year 5 upwards, which can be an
attractive feature for some families and requires additional
information regarding guardianship.^31^
Verdict: Harrow offers a world-class British education with a
prestigious heritage and a strong focus on holistic development. It is
an excellent A-Level alternative to the IB. As with other top-tier
British schools, the key unknown is the specific nature of their EAL
support for students entering the critical IGCSE years. Direct
engagement with the school is necessary to determine viability.

Part III: Excellent IB and AP-Focused Institutions

Beyond the premier tier, Bangkok is home to a number of other
exceptional schools that offer strong IB or AP programs. These
institutions often provide a different community feel and may have more
flexible admissions criteria, making them compelling alternatives.

3.1. KIS International School

Profile: KIS International School is a full IB World School,
centrally located in the Huay Kwang district within a quiet, gated
community.^10^ With a student body of around 800 students from nearly
50 nationalities, KIS is known for its warm, friendly, and close-knit
community atmosphere, which stands in contrast to the larger
premier-tier schools.^6^
Academics: Like NIST, KIS is exclusively dedicated to the
International Baccalaureate, offering all four IB programmes (PYP,
MYP, DP, and CP).^11^ This singular focus ensures that the IB's
educational philosophy is deeply integrated into every aspect of the
school. The school emphasizes inspiring individuals and nurturing
passion, with a curriculum designed to foster critical thinking and a
variety of pursuits in academics, arts, athletics, and service.^11^
EAL Analysis: The admissions process for secondary students
(Grades 6-11) includes a computer-based and written test in both Math
and English, followed by a family interview.^33^ While a specific
entry-level proficiency is not published, the assessment-based
approach suggests a managed intake process. The school's smaller size
and strong community ethos may translate into more personalized and
attentive EAL support. It is important to note that the school
discourages late applications into Grade 11 and applications into
Grade 12 due to the sequential nature of the IB Diploma, making the
Grade 10 entry point ideal.^33^
Admissions: KIS uses the OpenApply online portal for a streamlined
admissions process.^33^ The application requires school reports from
the last two years, teacher and administrator recommendations, and
payment of an application fee. The school considers a range of factors
in its admissions decisions, including English proficiency, previous
academic records, and class dynamics.^33^
Verdict: KIS is an outstanding choice for a family seeking a pure
and immersive IB education within a supportive, mid-sized community.
The environment could be particularly beneficial for a student
transitioning into a new country and educational system. Its
suitability will depend on the student's performance in the English
assessment, but it presents a very strong and potentially more
accessible alternative to NIST.

3.2. St. Andrews International School, Sukhumvit (S107)

Profile: St. Andrews Sukhumvit (S107) is a prominent IB school
located in the Bang Na area, with a green and spacious campus that is
conveniently accessible via the Bearing BTS station.^34^ As part of
the global Nord Anglia Education network, the school offers its
students unique international opportunities, including exclusive
collaborations with The Juilliard School, the Massachusetts Institute
of Technology (MIT), and UNICEF, as well as access to a global campus
platform connecting students across 32 countries.^35^
Academics: The school follows a version of the English National
Curriculum, preparing students for IGCSE examinations before they
embark on their senior studies.^8^ In Years 12 and 13, St. Andrews
offers a wide range of pathways, including the International
Baccalaureate Diploma Programme (IBDP) and the International
Baccalaureate Career-related Programme (IBCP).^34^ The school reports
outstanding academic results, including a 100% pass rate for the IBDP
and 100% university acceptance over the last three years.^36^
EAL Analysis: The admissions process for secondary students is
thorough and includes a dedicated English assessment that evaluates
all four language skills: reading, writing, speaking, and
listening.^37^ This comprehensive evaluation indicates a
well-structured process for placing students appropriately. As part of
a large, global education group, the school is likely to have a
well-resourced and experienced EAL department accustomed to supporting
students from diverse linguistic backgrounds.
Admissions: The application is managed through an online portal
and requires a non-refundable application fee of THB 5,000.^37^
Following the submission of the application and supporting documents
(including report cards for the two prior years), the school arranges
the necessary assessments. A formal offer of a place is typically
issued following a successful assessment, and parents must accept the
offer within seven days.^37^
Verdict: St. Andrews Sukhumvit is a very strong contender. It
offers the best of both worlds: the structured foundation of the
British IGCSE system followed by the breadth and global recognition of
the IB Diploma. Its affiliation with Nord Anglia provides unique
global enrichment opportunities. The school's professional and
systematic approach to English language assessment suggests it is
well-equipped to support new international students, making it a
high-potential option.

3.3. Ruamrudee International School (RIS)

Profile: Founded in 1957 by Redemptorist Fathers, Ruamrudee
International School (RIS) is one of Bangkok's oldest and most
respected international schools.^38^ While it has a Catholic heritage,
it fosters an inclusive, interfaith community and welcomes students of
all backgrounds.^39^ The school is located on a large campus in the
Minburi district and serves approximately 1,200-1,400 students.^10^
Academics: RIS offers a college-preparatory American curriculum,
accredited by WASC.^10^ Its key academic strength lies in the
flexibility it offers senior students. In Grades 11 and 12, students
can choose between the IB Diploma Programme and a wide range of
Advanced Placement (AP) courses.^40^ RIS is one of only a handful of
schools in the region to offer both pathways, providing students with
a similar level of choice as ISB. The school offers an impressive 47
IB classes and 17 AP classes, and its students achieve results that
far exceed world averages in both programs.^41^
EAL Analysis: RIS positions itself as an inclusive school that
nurtures English language acquisition across the curriculum.^40^
Crucially, its admissions policy states that RIS "welcomes new
students the whole year round," and its fee policy includes
provisions for late enrollees.^43^ This language suggests a more
flexible and accommodating approach to mid-year admissions and EAL
support compared to the more rigid policies of some premier-tier
schools. This makes RIS a particularly noteworthy option.
Admissions: The admissions process begins with a recommended
school visit, followed by the submission of an application form and a
non-refundable THB 5,000 fee.^44^ All applicants undergo screening and
admissions testing appropriate to their age level. The school's
rolling admissions policy is a significant advantage for families
relocating mid-year.^43^
Verdict: Ruamruedee International School is a top-tier choice that
combines a long history of academic excellence with significant
flexibility. Its dual IB and AP pathways are a major advantage, and
its stated inclusive ethos and year-round admissions policy make it
one of the most promising and accessible options for a B1-level
student seeking entry into a rigorous high school program.

3.4. Concordian International School

Profile: Concordian International School offers a unique
educational proposition as a trilingual, full IB World School.^27^
Located near the Bang Na area, the school is committed to immersing
students in English, Chinese (Mandarin), and Thai.^46^ This linguistic
focus is central to its identity and mission to nurture moral and
responsible young leaders.^46^
Academics: Concordian is fully committed to the IB framework,
offering the continuum of the Primary Years Programme (PYP), Middle
Years Programme (MYP), and the Diploma Programme (DP).^45^ The
curriculum is designed to foster academic excellence within a
supportive IB setting where inquiry and critical thinking are
paramount.^46^
EAL Analysis: The school's core mission is trilingualism. This
implies that students are expected to achieve high proficiency in
multiple languages. For a student entering high school whose primary
need is intensive English language development, this environment may
not be the ideal fit. The program is likely designed for students who
already possess a strong command of English and are looking to develop
or maintain high-level Mandarin skills. The admissions process
involves entrance tests and an interview to ensure students can cope
with the demanding curriculum.^45^
Admissions: The school practices a rolling admissions policy,
accepting applications throughout the year to accommodate relocating
families.^47^ The process can be initiated via an online or
paper-based application, followed by testing and a personal interview
with both the student and parents.^45^
Verdict: Concordian is an excellent school with a distinctive and
valuable trilingual focus. It is an ideal choice for students who
align with its linguistic mission. However, for a student whose
immediate and primary challenge is acquiring academic English, other
schools with dedicated, intensive EAL programs may offer a more
suitable and supportive environment.

Part IV: Notable American and British Curriculum Alternatives

This section profiles the remaining schools from the list of 20. These
institutions offer strong academic programs, primarily based on the
American AP or British A-Level systems, and represent excellent
alternatives that provide diverse learning environments and pathways to
top universities.

4.1. BASIS International School Bangkok

Profile: Part of the globally recognized BASIS Curriculum Schools
network, BASIS International School Bangkok offers a rigorous
American-style education.^48^ The school is located near Central Rama
2 and features a modern campus designed as a "School of the Future"
with advanced environmental systems.^49^
Academics: The BASIS curriculum is known for its academic rigor
and focus on STEM subjects.^48^ A unique feature is that students can
begin taking Advanced Placement (AP) courses as early as Grade 9,
allowing them to engage with college-level material sooner than in
most schools.^48^ Students are required to take a minimum of four AP
courses and exams to graduate. The school offers 17 different AP
courses across a range of disciplines.^48^
EAL Analysis: The admissions process for Grade 2 and higher
includes an entrance exam and a family meeting.^50^ While the school
serves both expatriate and Thai students, the intense academic nature
of the curriculum, with AP courses starting in Grade 9, suggests that
a high level of English proficiency would be required for a student to
be successful from the outset. Specific details on their EAL support
structure for high school are not prominent in the research and would
require direct inquiry.
Admissions: The school accepts applications for fall enrollment
and the process is described as selective and multi-step, including an
online application (THB 5,000 fee), submission of transcripts, teacher
evaluations, an entrance exam, and a family meeting.^50^
Verdict: BASIS is an excellent choice for a high-achieving,
self-motivated student, particularly one with a strong interest in
STEM. The opportunity to take AP courses from Grade 9 is a unique
advantage. However, the accelerated and demanding nature of the
curriculum may present a significant challenge for a student
simultaneously needing to develop academic English proficiency.

4.2. Wellington College International School Bangkok

Profile: Wellington College International School Bangkok is the
overseas branch of the prestigious Wellington College in the UK. The
school aims to provide a progressive and inspiring education based on
the five Wellington identities: Inspired, Intellectual, Independent,
Individual, and Inclusive.^52^ It is located on Krungthep Kreetha
Road.^52^
Academics: The school offers a British curriculum, leading to
IGCSEs and A-Levels.^54^ The curriculum is designed to be academically
excellent while fostering a strong sense of community.^54^
EAL Analysis: The school has a dedicated EAL program, which is
line-managed by the Director of Languages.^56^ The policy states that
there is a collective responsibility among all staff to support EAL
students. EAL support is provided as an intervention that is
"additional to, or otherwise different from, the educational
provision made generally for children of their age".^56^ Support
typically ceases when a student can access the curriculum content
independently. The admissions process includes a computerized
assessment (CAT4) and an interview for students in Year 3 and above to
determine their potential to access the curriculum.^55^
Admissions: Applications are received all year round, and mid-year
enrollment is possible depending on availability.^57^ The process
involves making an enquiry, booking a visit, and then submitting an
online application with supporting documents and a non-refundable
application fee.^58^
Verdict: Wellington College offers a top-tier British education
with a strong pastoral ethos. Its structured EAL policy and assessment
process indicate a professional approach to language support. It
stands as a strong A-Level alternative, and its suitability would
depend on the assessment outcome and the specific support plan
offered.

4.3. King's College International School Bangkok

Profile: Affiliated with King's College School, Wimbledon, one of
the most academically successful schools in the UK, King's College
International School Bangkok aims to be one of the best schools in
Asia.^59^ The school's culture is founded on the core values of
kindness and wisdom, fostering a caring environment where students are
encouraged to have generous hearts and open minds.^59^
Academics: The school offers a British curriculum leading to IGCSE
and A-Levels, mirroring the academic approach of its sister school in
the UK.^59^ The curriculum is designed to be rigorous and inspiring,
with a strong track record of sending graduates to top universities,
including a high number to Oxford and Cambridge from its UK
counterpart.^59^
EAL Analysis: The admissions process aims to identify students
with academic potential and interests beyond the curriculum.^60^ While
specific details of the EAL program are not provided, the school's
value-led, student-centered approach suggests a supportive
environment. The level of EAL support available for a Grade 10 entrant
would need to be confirmed directly with the admissions office.
Admissions: The admissions process seeks families who share the
school's vision of academic success combined with kindness and good
manners.^60^ Prospective students are assessed on their current
progress and academic potential. Applications can be made online.^60^
Verdict: King's College Bangkok brings a powerful academic
heritage and a strong, values-based culture to Bangkok. It is a
formidable choice for the A-Level pathway. As with other new,
prestigious British schools, verifying the depth and capacity of their
high school EAL program is a necessary step.

4.4. Bangkok Prep (Bangkok International Preparatory & Secondary School)

Profile: Bangkok Prep is a leading British International School
with two campuses in the Sukhumvit area, one for Primary and one for
Secondary.^8^ The school has a diverse student body with over 50
nationalities and is known for its nurturing community and strong
academic record.^27^
Academics: The school's program is based on the National
Curriculum of England, offering IGCSEs for Years 10-11 and
Cambridge-approved A-Levels for Years 12-13.^62^ They also offer the
BTEC qualification as an alternative pathway.^63^ Graduates are
accepted into top universities in the UK, USA, and worldwide.^62^
EAL Analysis: The admissions process for secondary students (Years
7-12) includes a CAT4 test, an Oxford Online Placement Test, and a
written essay, which may be followed by an interview with the academic
team.^64^ This comprehensive assessment battery is designed to
accurately gauge a student's academic and linguistic capabilities.
The structured nature of the assessment suggests a well-defined
process for placing EAL students.
Admissions: The admissions process begins with an online enquiry
form, followed by a school tour (virtual or in-person).^64^ After
submitting a full application, the assessment is scheduled. Admissions
decisions are typically communicated within 1-2 weeks of the
assessment.^64^
Verdict: Bangkok Prep is a highly respected and well-established
British curriculum school with a strong academic track record. Its
thorough assessment process for secondary applicants indicates it is
well-prepared to evaluate and place students with EAL needs. It is a
very solid choice for the A-Level track.

4.5. The American School of Bangkok (ASB) / XCL American School of Bangkok

Profile: Operating since 1983, The American School of Bangkok (now
with its Sukhumvit campus rebranded as XCL American School of Bangkok
after joining XCL Education) is a WASC-accredited school with two
campuses: Sukhumvit and Green Valley.^65^ The school serves a
multicultural community of students from over 40 countries.^65^
Academics: ASB offers an American curriculum from Pre-K to
Grade 12. The high school program is a rigorous college-preparatory
course that includes one of the widest selections of Advanced
Placement (AP) courses in Bangkok, as well as the AP Capstone Diploma
program.^65^
EAL Analysis: The school has an established English Language
Learner (ELL) program, for which an additional fee is charged per
semester.^69^ The existence of a formal, fee-based program indicates a
dedicated support structure for students who are not yet proficient in
English. The admissions process may include an English language
proficiency assessment to determine placement.^71^
Admissions: ASB accepts applications throughout the year. The
process requires an online application, submission of required
documents (including previous school records), and payment of a
non-refundable application fee. Some applicants may be invited for an
assessment or a family meeting.^71^
Verdict: ASB is a long-standing and reputable American curriculum
school with a very strong and extensive AP program. Its dedicated,
fee-based ELL program makes it a viable and attractive option for a
student needing language support while aiming for the AP pathway.

4.6. Wells International School

Profile: Wells International School provides an American and IB
university-preparatory curriculum to over 800 students from nearly 30
nationalities across several campuses.^8^ The main On Nut campus
serves students through Grade 12 and is known for its state-of-the-art
facilities.^73^
Academics: The high school program at the On Nut campus offers
students the choice of an American high school diploma, Advanced
Placement (AP) courses, and the International Baccalaureate Diploma
Programme (IBDP).^10^ This dual IB/AP offering provides excellent
academic flexibility, similar to ISB and RIS.
EAL Analysis: The admissions procedure for students from Grade 3
to Grade 12 includes a comprehensive set of assessments: a Diagnostic
Online Reading Assessment (DORA) to profile English levels, an ALEKS
test for mathematics, a writing assessment, and a personal
interview.^75^ Crucially, the school's fee structure explicitly lists
an "ESL fee (only for those students unable to enter mainstream
courses)".^75^ This indicates a clear, structured pathway and
dedicated resources for students requiring significant English
support, making it a highly promising option.
Admissions: Wells welcomes enquiries from families throughout the
year.^72^ The official enrollment process involves submitting an
application, scheduling and completing the admissions tests,
submitting official documents, and paying school fees.^75^
Verdict: Wells International School represents a strategic "sweet
spot." It offers the desired IB Diploma as well as the AP option,
providing excellent academic choice. Its transparent and structured
EAL assessment process, combined with a clear, fee-based ESL program,
suggests it is well-equipped and willing to support students who are
not yet ready for the mainstream curriculum. It is a very strong and
pragmatic choice.

4.7. Ascot International School

Profile: Ascot International School is an IB Continuum School,
offering the PYP, MYP, and DP, located in the Sapansung district.^76^
The school aims to foster adaptable lifelong learners and global
citizens.^76^
Academics: As an IB World School, Ascot is authorized to deliver
the IB Diploma Programme (DP).^76^ The curriculum is concept-driven
and inquiry-based, preparing students for the rigors of the DP. Before
the DP, students can also take IGCSE exams.^21^
EAL Analysis: Admissions for all upper primary and secondary
students require Maths and English assessments.^78^ Admission may be
conditional on the student receiving EAL support, which is provided
free of charge. The school will evaluate secondary students to
determine if it can provide the appropriate level of EAL support
needed for them to function in the mainstream classroom.^78^
Admissions: Admissions are open to all students who would benefit
from the school's programs, and applications are accepted throughout
the year, space permitting.^78^ The process involves an inquiry, a
school tour, submission of an application, and an interview with the
Headmaster.^79^
Verdict: Ascot is a solid choice for an IB education, with the
added benefit of IGCSEs for preparation. The provision of free EAL
support is a notable feature. Its suitability would depend on their
assessment of whether they can adequately support a B1-level student
within their secondary school framework.

4.8. Regent's International School Bangkok

Profile: Regent's International School Bangkok is a day and
boarding school for students aged 2 to 18, representing 54
nationalities.^80^ The school is guided by a vision to "bring out the
best in everyone".^80^
Academics: The school offers an enhanced English National
Curriculum, leading to IGCSEs and then the IB Diploma Programme.^21^
The school prides itself on "world-beating" IGCSE and IB
results.^80^
EAL Analysis: Regent's has an English Language Development (ELD)
programme taught by specialist English teachers designed to accelerate
language acquisition until students are ready for mainstream
classes.^81^ The school states that this structure allows students
arriving with "little or no English proficiency" to develop
fluency.^81^ This is a very strong and positive statement regarding
their EAL capacity. The admissions process includes testing in English
and an interview.^82^
Admissions: The school welcomes applications at any time during
the school year and has an inclusive admissions policy.^83^ The
process involves submitting an application (THB 5,500 fee), providing
documents, and undergoing an assessment, which for secondary
candidates takes approximately 4-5 hours.^82^
Verdict: Regent's is a very strong candidate. It offers the
preferred IB Diploma pathway, preceded by IGCSEs. Most importantly,
its EAL program is explicitly described as being capable of handling
students with low English proficiency and accelerating their learning.
This makes it one of the most promising options.

4.9. Berkeley International School

Profile: Berkeley International School is an American
college-preparatory school offering education from pre-K through Grade
12.^67^ The school's philosophy is encapsulated by the acronym
"P.R.I.D.E." (Passionate, Resilient, Inquisitive, Dedicated, and
Ethical).^84^ The student body comprises over 35 nationalities.^84^
Academics: The high school curriculum is a rigorous program that
includes AP courses and a range of electives, supported by
personalized college counseling.^84^
EAL Analysis: The school has a Student Support Services (SSS) team
that includes learning support for both EAL and Special Educational
Needs (SEN).^85^ Support is provided through a Multi-Tiered System of
Supports (MTSS), with flexible models including in-classroom (push-in)
and pull-out interventions.^85^ A learning support program is
explicitly in place for ESL students in middle school, and it is
logical to assume this extends to high school.^86^ An annual fee of up
to THB 90,000 may be assessed for students requiring ESL support.^87^
Admissions: Berkeley has a rolling admission process, so there is
no application deadline.^88^ The process includes entrance testing (if
applicable), completion of an application package, and an interview
with the division principal.^88^
Verdict: Berkeley is a solid American curriculum school with a
strong AP offering. Its well-defined, multi-tiered EAL support system
and rolling admissions policy make it a viable and supportive option
for a student needing to develop their English skills.

Part V: Comparative Analysis and Strategic Recommendations

The individual school profiles provide a wealth of data. This section
synthesizes that information into a comparative framework to facilitate
a final, strategic decision. The analysis will focus on the key vectors
identified in Part I: academic alignment, linguistic viability, and
holistic integration.

5.1. Master Comparison Table of 20 International Schools

The following table provides a high-level overview of the 20 analyzed
schools, allowing for a quick comparison of the most critical factors.
Tuition fees are for the 2024/2025 or 2025/2026 academic year for Grade
10 (or equivalent) where available and are approximate annual figures.

Note: Shrewsbury City Campus and St. Andrews Dusit are primary-only
schools and are not suitable options.

5.2. EAL Program Deep Dive & Transition Support Analysis

The single most important factor for a successful transition is the
school's ability and willingness to support a CEFR B1-level student
entering the academically demanding Grade 10 year. The table below
compares the EAL programs of the most promising candidates.

School Name EAL Entry Threshold for Support Model Assessment Pastoral/Transition
Grade 10 Method Support

NIST / ISB Intermediate/Advanced Co-teaching, Internal Strong counseling
Only ^4^ Sheltered assessment, departments,
Immersion, EAP standardized orientation programs
classes ^5^ tests ^13^ ^15^

Ruamruedee Inclusive; welcomes Integrated Internal Strong counseling,
(RIS) students year-round ^40^ language assessment and Catholic heritage
acquisition testing ^44^ values of care and
across compassion ^39^
curriculum ^40^

Regent's Inclusive; explicitly Dedicated, Internal Strong pastoral care,
Int'l supports students with specialist-led assessment boarding community
"little or no English" ELD programme to (English, option ^82^
^81^ accelerate Maths,
fluency ^81^ Non-Verbal) and
interview ^82^

Wells Inclusive; explicit fee Dedicated ESL DORA (online Caring community
Int'l for students unable to program, likely reading), ethos, counseling
enter mainstream ^75^ pull-out model writing support available
for intensive assessment, ^73^
support interview ^75^

St. Andrews Assessed; no explicit Likely a mix of Comprehensive Strong pastoral
S107 barrier mentioned ^37^ in-class support assessment of system, global
and pull-out all four network resources
based on need language skills (Nord Anglia) ^35^
^37^

Bangkok Assessed for IGCSE In-class support Internal Strong pastoral
Patana readiness ^23^ plus 2 assessment of system, well-defined
hours/week of English Key Stage structure
discreet language ^20^
language lessons abilities ^23^
^22^

This comparison reveals a critical divergence. The most prestigious
schools, NIST and ISB, have EAL policies that create a high
admissions hurdle. Their programs are designed to support students who
are already conversationally fluent and need to refine their academic
English, not for students who require foundational academic language
development.

In contrast, schools like Regent's, Wells, and Ruamruedee (RIS)
have more inclusive and accommodating EAL frameworks. Regent's explicit
statement about supporting students with "little or no English" is
particularly compelling.^81^ Wells' separate ESL fee structure
indicates a dedicated, resourced program for students needing intensive
support.^75^ RIS's year-round welcome policy points to a flexible
system designed to integrate new international students effectively.^43^
These schools, therefore, represent a lower admissions risk and a higher
probability of providing the specific, intensive support the student
requires at this stage.

5.3. Curriculum Philosophy: IB Diploma vs. AP vs. A-Levels

International Baccalaureate (IB) Diploma: This is a broad,
holistic, and academically challenging two-year program. Students
study six subjects from different discipline groups, write a
4,000-word Extended Essay (EE) on a research topic of their choice,
complete a course in Theory of Knowledge (TOK), and engage in
Creativity, Activity, Service (CAS) projects.^9^ It is excellent for
developing well-rounded, independent learners with strong research and
critical thinking skills. It is best suited for students who are
intellectually curious across a range of subjects.
Schools offering IB DP: NIST, ISB, Bangkok Patana, KIS, St.
Andrews S107, RIS, Concordian, Wells, Ascot, Regent's.
Advanced Placement (AP): This is a system of college-level courses
and exams administered by the US College Board.^107^ Students can
choose to take as many or as few AP courses as they wish, allowing for
deep specialization in areas of strength. It is highly valued by US
universities. It is best suited for students who have clear academic
strengths and wish to demonstrate college-level mastery in those
specific subjects.
Schools offering AP: ISB, RIS, BASIS, ASB/XCL ASB, Wells,
Berkeley.
A-Levels: This is the British pre-university qualification.
Students typically specialize in only three or four subjects, which
they study in great depth over two years. It is considered the gold
standard for entry into UK universities and is excellent for students
who have a clear idea of what they wish to study at the tertiary
level. Schools offering A-Levels: Shrewsbury, Harrow, Wellington,
King's College, Bangkok Prep.

For a student transitioning from the Japanese system, the structured
nature of the IGCSE program (offered by the British schools) can be an
excellent two-year preparation for any of the senior pathways. The
choice between IB DP and AP/A-Levels depends on whether a broad,
interdisciplinary education (IB) or a more specialized, focused path
(AP/A-Levels) is preferred. Schools like ISB, RIS, and Wells offer
the ultimate flexibility by providing both IB and AP options.

5.4. Cultural Fit and Community

The transition from a Japanese school environment to a Western
international school involves significant cultural adjustment. The
choice of school community can ease this process.

Large, Diverse "Super Schools" (e.g., ISB, BPS, NIST): With
student bodies of 1,800-2,250+, these schools offer an incredible
diversity of nationalities, programs, and resources.^10^ The
environment is dynamic and full of opportunities. However, the sheer
size can be overwhelming for a new student, and it can be easier to
feel anonymous.
Mid-Sized, Community-Focused Schools (e.g., KIS, St. Andrews):
With student populations typically under 1,000, these schools often
pride themselves on a "close-knit" or "family" atmosphere.^11^
This can provide a more nurturing environment where a new student is
known individually by teachers and peers, potentially accelerating
social integration.
Traditional British Schools (e.g., Harrow, Shrewsbury,
Wellington): These schools often import the culture of their UK
counterparts, which can include a house system, more formal codes of
conduct, and a strong emphasis on tradition and institutional
pride.^8^ This structured environment can be very supportive for some
students.

For a student accustomed to the structured and group-oriented nature of
Japanese schools, a mid-sized school with a strong community feel or a
British school with a well-defined pastoral house system could offer the
most supportive environment for a smooth transition.

Part VI: Final Shortlist and Actionable Next Steps

Based on a comprehensive synthesis of academic quality, curriculum
options, and---most critically---the viability of the English as an
Additional Language program for a CEFR B1-level student entering Grade
10, the following curated shortlist is recommended. The schools are
ranked according to their "Best Fit" score, which prioritizes a high
probability of admission and successful linguistic and academic
integration.

6.1. Curated Shortlist of 5 Schools

Ruamruedee International School (RIS): The top recommendation
due to its ideal balance of high academic standards, ultimate
curriculum flexibility (IB DP and AP), and an inclusive, year-round
admissions policy that appears highly accommodating to EAL students.
Regent's International School Bangkok: A very close second. It
offers the preferred IB pathway (preceded by IGCSEs) and has an EAL
program that is explicitly designed to accelerate fluency for
students with even low levels of English, representing a very safe
and supportive choice.
Wells International School: An excellent and pragmatic choice.
It offers both IB DP and AP pathways, providing great flexibility.
Its transparent EAL assessment process and clear, fee-based ESL
program signal a strong, dedicated structure for language support.
St. Andrews International School, Sukhumvit (S107): A top-tier
option that combines the British IGCSE foundation with the IB DP.
Its global Nord Anglia network provides exceptional resources, and
its thorough EAL assessment process suggests a professional and
well-equipped support system.
International School Bangkok (ISB): Included as the premier
aspirational choice. It offers unmatched facilities and academic
flexibility (IB DP and AP). Securing admission is a significant
challenge due to its high English proficiency requirement for high
school, but its quality warrants an inquiry and assessment if the
student's English skills are rapidly progressing.

6.2. Detailed Justification for Each Recommendation

RIS is the top choice because it minimizes risk while maximizing
opportunity. The dual IB/AP curriculum keeps all university pathways
open. Its long-standing reputation ensures academic quality. Most
importantly, its inclusive ethos and welcoming admissions policy
provide the highest likelihood of acceptance and of receiving the
necessary support for the student to thrive.^40^
Regent's is highly recommended for its powerful EAL promise. The
school's stated confidence in its ability to bring students with
limited English to full fluency is a significant differentiator.^81^
Combined with the strong IGCSE-to-IB DP pathway, it offers a secure
and structured route to success.
Wells stands out for its transparency and structure. The clear
DORA assessment and the separate ESL fee indicate a system, not an
ad-hoc arrangement.^75^ This, combined with its IB/AP flexibility,
makes it a very reliable and high-quality option that is likely to
deliver exactly the support the student needs.
St. Andrews S107 offers a compelling package of a strong British
academic foundation, the globally-recognized IB Diploma, and the
unique enrichment opportunities of the Nord Anglia network.^35^ Its
professional approach to EAL assessment makes it a trustworthy and
high-quality institution to engage with.
ISB remains on the list because it represents the pinnacle of
international schooling in Bangkok. If the student's language
assessment meets their "Intermediate" threshold, it offers an
unparalleled educational experience.^5^ It should be pursued in
parallel, with the understanding that the admissions bar is
exceptionally high.

6.3. Action Plan for Your Family

To move forward effectively, a structured approach is recommended.

Step 1: Immediate Outreach (Timeline: Next 7 Days)
- Contact the admissions offices of all five shortlisted schools. Use
  the contact information provided on their websites.
- RIS: admissions@rism.ac.th ^42^
- Regent's: admissions-bkk@regents.ac.th ^82^
- Wells: admissions@wells.ac.th (inferred from website structure)
- St. Andrews S107: admissions@standrews.ac.th (inferred from
  website structure)
- ISB: admissions@isb.ac.th ^17^
- In your initial email, introduce your daughter (age, current grade
  in Japan, Eiken Grade 2/CEFR B1 English level) and express interest
  in admission for the upcoming academic year.
Step 2: Key Questions for Admissions Officers (Timeline: During
Initial Contact)
- Your primary goal is to clarify their EAL policies for Grade 10
  entry. Ask the following specific questions:
  1. "What is your minimum English proficiency requirement, often
    expressed in CEFR terms, for direct entry into Grade 10?"
  2. "Could you describe the English language assessment process for
    a prospective Grade 10 student who is a non-native speaker?"
  3. "What does your EAL support program look like for a Grade 10
    student? Is it primarily in-class support, or do you offer
    separate, intensive English classes?"
  4. "Based on a CEFR B1 level, what would be the likely educational
    path for a student in her first semester or year at your
    school?"
  5. "Given that we are an international family relocating, could
    you confirm your policy on rolling admissions and the current
    availability of places in Grade 10?"
Step 3: Document Preparation (Timeline: Next 2 Weeks)
- While awaiting responses, begin compiling the necessary application
  documents. Common requirements across all schools include:
  - Completed online application form for each school.
  - Copies of student's and parents' passports and visas.
  - Student's birth certificate.
  - Passport-sized photographs of the student and parents.
  - Official school reports/transcripts for the last two academic
    years (current Grade 9 and completed Grade 8), officially
    translated into English.
  - Confidential teacher and administrator/principal recommendation
    forms (schools will provide these to be sent to your daughter's
    current school).
  - Any relevant medical or special educational needs
    documentation.^14^
Step 4: Schedule Virtual Tours & Interviews (Timeline: Next 3-4
Weeks)
- Based on the initial responses, prioritize the top 2-3 most
  promising schools.
- Request virtual meetings with key personnel: the Head of Admissions,
  the Head of the EAL Department, and the High School Principal or a
  High School Counselor. These meetings are crucial for assessing the
  school's culture and the depth of their support systems.
Step 5: Application Submission and Assessment (Timeline: Next 4-6
Weeks)
- Complete and submit the full online applications for your top
  choices.
- Pay the non-refundable application fees (typically THB 5,000-6,000
  per school).
- Work with the admissions offices to schedule the required online
  assessments for your daughter. Ensure she has a quiet space and the
  necessary technology.

By following this structured plan, you will be able to efficiently
gather the critical information needed to move from this comprehensive
analysis to a confident, well-informed final decision.

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