International schools in Bangkok

Amnuay Silpa School is a bilingual Thai-English school in central Bangkok offering a British and Thai curriculum blend. It may especially suit families who want strong Thai language and culture alongside English-medium learning. The school is centrally located near Ratchathewi, suiting families around Phaya Thai, Siam, Victory Monument, or Dusit. Parents should check how international the environment feels compared with more expat-focused schools.

Annual fee

฿491k – ฿542k

Ages

3–18

Class size

Not publicly listed

Admissions

Moderate

Ascot International School is an IB World School in Ramkhamhaeng / Saphan Sung offering the full IB continuum (PYP, MYP, DP, CP) with early years provision starting from 18 months. The school has a community-focused identity and a pathway through Year 13. Parents should factor in extra costs such as EAL, meal fees, resources, and residentials where applicable.

Annual fee

฿274k – ฿595k

Ages

1–18

Class size

Not publicly listed

Admissions

Selective

Aster International School Bangkok is a newer British curriculum school in central Bangkok offering early years through secondary with a broad, flexible British-style education. Its central location may appeal to families who want a British option without moving to the suburbs. Parents should verify the full fee schedule, address, and support provision directly with admissions.

Annual fee

฿314k – ฿576k

Ages

2–18

Class size

Not publicly listed

Admissions

Moderate

Australian International School Bangkok is a boutique international school with campuses in Sukhumvit and Ramintra. It combines Australian early learning influences with British-style secondary pathways including IGCSE and A-Level. The school may appeal to families wanting a smaller-feel international school in central Bangkok. Parents should confirm which campus applies to their child’s age group.

Annual fee

฿322k – ฿535k

Ages

2–18

Class size

Secondary source lists average 15 and maximum 18; verify with admissions.

Admissions

Moderate

Bangkok Prep is a British curriculum school in the Sukhumvit / On Nut area. Offers a pathway from early years through IGCSE and A-Level, suitable for families who want a familiar UK-style progression. Accessible for many families along Sukhumvit and eastern Bangkok. May appeal to parents wanting a British school that is still relatively central compared with larger suburban campuses.

Annual fee

฿385k – ฿862k

Ages

Pre-Nursery (verify)–18

Class size

Not publicly listed

Admissions

Moderate

Bangkok Patana is one of Bangkok's longest-established international schools and follows a British curriculum pathway with senior IB options. Located in Bang Na, especially relevant for families in eastern Bangkok, Bang Na, Samut Prakan, or along Sukhumvit. Large campus with broad academic, arts, sports, and co-curricular provision. Likely to appeal to families wanting a well-established British-style school with a strong reputation.

Annual fee

฿525k – ฿1005k

Ages

2–18

Class size

Secondary directory reports average ~22, max ~23 (verify with admissions)

Admissions

Highly selective

BASIS International School Bangkok offers the BASIS Curriculum on a Rama 2 campus. The school is positioned around a rigorous academic model and a structured pathway from early years through secondary. It may be attractive to families wanting a strong academic focus and American-style preparation. Parents should ask carefully about support services, student wellbeing, and how the academic pace fits their child.

Annual fee

฿565k – ฿1038k

Ages

2–18

Class size

Not publicly listed

Admissions

Selective

Berkeley International School is an American college-preparatory school in Bang Na offering Pre-K through Grade 12 with AP options in high school. It may suit families looking for an American curriculum in eastern Bangkok. Parents should check ESL costs, learning support capacity, and university counselling provision.

Annual fee

฿524k – ฿848k

Ages

2–18

Class size

Not publicly listed

Admissions

Selective

Brighton College Bangkok is a British curriculum school in the Krungthep Kreetha area. It follows a UK-style pathway through early years, prep, senior school, and sixth form. The school may appeal to families wanting a British independent-school style education outside the most congested central Bangkok zones. Fee transparency should be checked directly with admissions — the official fee page did not expose the full annual fee table clearly.

Annual fee

฿590k – ฿590k

Ages

2–18

Class size

Not publicly listed

Admissions

Selective

British Columbia International School Bangkok offers the British Columbia curriculum in the Kalaprapruk / Phasi Charoen area. It may appeal to families looking for a Canadian pathway rather than the more common British, American, or IB options, serving elementary through high school. Parents should confirm current fee schedules, graduation pathway details, and support provision directly.

Annual fee

฿376k – ฿546k

Ages

3–18

Class size

Secondary source lists typical class size around 17; verify with admissions.

Admissions

Moderate

BSB British International Primary School is a small British primary school on Sukhumvit Soi 4. Its central location near Nana and Asok may appeal to families living downtown. The school is focused on younger learners, so parents will need to plan for secondary transfer later. A practical option for families seeking a smaller, central, lower-fee British primary environment.

Annual fee

฿195k – ฿401k

Ages

2–11

Class size

Not publicly listed

Admissions

Open

Canadian International School of Thailand offers a Canadian and IB-influenced pathway in the Pinklao / Bang Phlat area. The school is positioned as a more accessible international option compared with many premium Bangkok schools, with published fees and boarding options. It may suit families looking for Ontario Curriculum, OSSD pathways, and multilingual learning in a smaller community setting.

Annual fee

฿190k – ฿416k

Ages

2–18

Class size

Secondary directory lists average 15 and maximum 23; verify with admissions

Admissions

Moderate

Charter International School is a British curriculum school in eastern Bangkok following the English National Curriculum with Cambridge Checkpoint, IGCSE, and A-Level pathways. It may appeal to families seeking a more affordable British curriculum option than Bangkok's premium tier schools. Parents should verify support services and compulsory fees before applying.

Annual fee

฿273k – ฿551k

Ages

2–18

Class size

Not publicly listed

Admissions

Moderate

Concordian International School is an IB school near Bang Na / Samut Prakan with a strong English-Chinese-Thai identity. It offers the IB continuum from early years through the Diploma Programme. The school is especially relevant for families who value Mandarin Chinese and Thai alongside English. Admissions include testing and interviews, so parents should prepare for a selective process.

Annual fee

฿627k – ฿964k

Ages

2–18

Class size

Secondary sources suggest smaller primary classes and larger secondary classes; verify with admissions

Admissions

Selective

D-PREP International School is a progressive American curriculum school near Mega Bangna. It blends Reggio Emilia influences in early years, IB PYP in primary, expeditionary learning in middle school, and AP / AP Capstone in high school. May suit families wanting a project-based, experiential alternative to traditional international schools. Parents should verify current fees and support arrangements directly because official pages were partially inaccessible during research.

Annual fee

฿454k – ฿698k

Ages

2–18

Class size

Average 12, maximum 22, ratio 1:10 (per secondary source; verify with admissions)

Admissions

Moderate

Denla British School Bangkok is a British international school on Ratchapruek Road in Nonthaburi. It offers an Enhanced British Curriculum from early years to sixth form and has a large campus with strong facilities. The school may suit families who want a British pathway outside central Bangkok, especially around Ratchapruek, Nonthaburi, and western Bangkok. Parents should confirm all entry fees and support options before applying.

Annual fee

฿531k – ฿1009k

Ages

2–18

Class size

Class-size caps: up to 15 in Mini Dragons/Early Years, up to 22 in Years 1-11, and up to 16 in Sixth Form

Admissions

Selective

A long-established Christian international school in the Ekkamai area, operated within the Seventh-day Adventist tradition and offering an American-style pathway.

Annual fee

฿160k – ฿176k

Ages

2–18

Class size

Not publicly listed

Admissions

Moderate

A well-established early years and primary-focused family of international schools with multiple campuses and a strong inquiry-based identity.

Annual fee

฿0k – ฿0k

Ages

1.5–11

Class size

Average 14; maximum 16

Admissions

Moderate

A British early years and primary school in the Sukhumvit area, expanding up to Year 6.

Annual fee

฿316k – ฿486k

Ages

1.33–11

Class size

Estimated average 17; maximum 22

Admissions

Open

A British international school in Sathorn offering a full pathway through IGCSE and A Levels.

Annual fee

฿260k – ฿514k

Ages

2–18

Class size

Not publicly listed

Admissions

Moderate

A trilingual-leaning international school group using Singapore-style primary education and British/Cambridge secondary pathways.

Annual fee

฿228k – ฿311k

Ages

2–18

Class size

Not publicly listed

Admissions

Open

Harrow Bangkok is a British international school in Don Mueang offering a pathway through IGCSE and A-Level. Large campus and also offers boarding, which makes it different from many central Bangkok day schools. Suited to families looking for a traditional British school model with strong co-curricular and pastoral structures. Convenient for northern Bangkok and airport-side areas but may be a long commute from central or eastern Bangkok.

Annual fee

฿718k – ฿1037k

Ages

18 months–18

Class size

Not publicly listed

Admissions

Selective

Heathfield International School is a British curriculum school in the Ramkhamhaeng / Saphan Sung area. It follows the National Curriculum of England from Nursery through A-Level. The school emphasizes small groups, individual attention, and a British-style house system. Parents should confirm current support fees and whether the latest fee schedule differs from older official PDFs.

Annual fee

฿264k – ฿503k

Ages

2–18

Class size

Official website describes small class sizes; exact numbers not listed.

Admissions

Moderate

International Community School Bangkok is an American Christian school in Bang Na serving students from K4 through Grade 12. It offers an American curriculum with AP options and a strong faith-based school identity. The school publishes clear tuition and fee information and has public information about ESL and learning support. It may suit families looking for an American-style Christian environment with structured support services.

Annual fee

฿525k – ฿622k

Ages

4–18

Class size

Not publicly listed

Admissions

Selective

International School Bangkok is a major American-style international school located in the Nichada Thani area of Nonthaburi. Offers a US-style pathway with AP, IB Diploma, and high school diploma options. Large, well-resourced campus with strong academics, activities, athletics, and support services. Especially suitable for families in northern Bangkok or Nonthaburi, or those wanting an American curriculum environment.

Annual fee

฿659k – ฿1197k

Ages

3–18

Class size

Student-teacher ratio listed as 9:1

Admissions

Highly selective

Invictus International Programme in Pathum Thani offers a Cambridge-aligned international education for younger learners, positioned as a more accessible pathway into international education with comparatively lower fees. It may suit families north of Bangkok or in Pathum Thani who want an English-medium primary option. Parents should confirm future secondary progression before applying.

Annual fee

฿280k – ฿390k

Ages

2–11

Class size

Not publicly listed

Admissions

Moderate

King's College International School Bangkok is a British curriculum school in the Ratchada-Rama 3 area. It is connected to King's College School Wimbledon and follows a traditional British pathway through the senior years. The school is likely to appeal to families looking for a high-profile British school with strong academic and pastoral positioning. Parents should expect competitive admissions and premium fees.

Annual fee

฿616k – ฿1063k

Ages

2–18

Class size

Not publicly listed

Admissions

Highly selective

KIS is a Bangkok IB World School offering the IB continuum, including PYP, MYP, DP, and CP. Located around Huai Khwang / Rama 9, practical for families in central-north Bangkok. May appeal to families looking for an IB environment that is smaller than some of Bangkok's very large international schools. Public information also gives useful detail about language pathways and learning support.

Annual fee

฿460k – ฿985k

Ages

2–19

Class size

Secondary profile reports average ~17, max ~23 (verify with admissions)

Admissions

Selective

KIS International School Reignwood Park is the newer KIS campus in Lam Luk Ka, Pathum Thani. It offers the IB continuum with day and boarding options, distinct from the original Bangkok KIS campus. The large campus and boarding village may appeal to families wanting more space and a residential option. Parents should weigh the commute carefully if they live in central Bangkok.

Annual fee

฿585k – ฿1040k

Ages

2–18

Class size

Not publicly listed

Admissions

Selective

Lycée Français International de Bangkok is Bangkok’s French international school and is recognized by AEFE. It follows the French national curriculum from kindergarten through the French Baccalaureate. The school is a strong fit for French-speaking families or families seeking continuity with the French education system. Parents from non-French backgrounds should ask carefully about language entry expectations and support.

Annual fee

฿286k – ฿507k

Ages

3–18

Class size

Secondary source lists average 20 and maximum 25; verify with admissions.

Admissions

Moderate

Modern International School Bangkok is a Cambridge pathway school offering education from Nursery to Year 13. It follows Cambridge Early Years, Primary, Lower Secondary, IGCSE, AS-Level, and A-Level routes. The school appears to be a lower-fee option compared with many Bangkok international schools. Parents should check support services, accreditation, facilities, and recent academic outcomes before applying.

Annual fee

฿234k – ฿307k

Ages

3–18

Class size

Not publicly listed

Admissions

Open

NIST is a central Bangkok IB school offering the full IB continuum from early years through the Diploma Programme. Its Sukhumvit location makes it attractive for families in central Bangkok, especially around Asok, Nana, Phrom Phong, and nearby BTS/MRT areas. Strong international profile and a concept-based IB approach. May be a strong fit for families who want continuity within one curriculum framework.

Annual fee

฿628k – ฿1095k

Ages

3–19

Class size

Not publicly listed

Admissions

Highly selective

NIVA American International School is an American curriculum school in Bang Kapi / Ladprao. It serves students from Nursery to Grade 12 and uses an American curriculum based on California Common Core standards. The school is comparatively lower-fee than many large Bangkok international schools. Parents should verify SEN provision and the exact current fee schedule before applying.

Annual fee

฿273k – ฿414k

Ages

2–18

Class size

Official FAQ lists class sizes around 15-26 and student-teacher ratios around 13:1 to 20:1.

Admissions

Moderate

A small early years school in the Pridi Banomyong area using a British early years framework and Japanese OISCA-inspired philosophy.

Annual fee

฿0k – ฿0k

Ages

1.5–7

Class size

Not publicly listed

Admissions

Open

Pan-Asia International School is an American and IB school in Prawet, east Bangkok. It offers an American-style foundation with IB MYP and DP in the secondary years. The school may suit families wanting an IB senior pathway without choosing one of Bangkok’s premium-fee IB schools. Parents should request the latest official fee schedule because fees were not clearly public on the official site.

Annual fee

฿0k – ฿0k

Ages

2–18

Class size

Not publicly listed

Admissions

Moderate

RBIS International School is a British school in central Bangkok, close to Phayathai and Rajavithi. It offers a British pathway with IGCSE, A-Level, and additional senior options such as BTEC. The school publicly lists smaller class-size caps, which may appeal to families wanting more individual attention. Parents should check EAL and learning support details before applying.

Annual fee

฿264k – ฿570k

Ages

1–18

Class size

Official FAQ lists Nursery maximum 12 with 4:1 staff ratio, Primary maximum 20, Secondary maximum 20.

Admissions

Moderate

Regent's International School Bangkok is a British day and boarding school in the Rama 9 / Wang Thonglang area. It offers a pathway through IGCSE and IB Diploma, useful for families wanting a British foundation with an IB senior option. Boarding makes it stand out from many Bangkok day schools. Parents should ask about boarding costs, learning support capacity, and EAL entry expectations.

Annual fee

฿431k – ฿760k

Ages

2–18

Class size

Not publicly listed

Admissions

Selective

Ruamrudee International School is a long-established international school in Minburi. It follows an American-style curriculum and offers a broad range of AP and IB courses in the upper years. The school also publishes ELD and Learning Support fees, which is useful for parents comparing support needs. Its location is better suited to families living in eastern or northern Bangkok than families based downtown.

Annual fee

฿538k – ฿786k

Ages

2–18

Class size

Not publicly listed

Admissions

Selective

Shrewsbury Bangkok is a British curriculum school with two campuses: Riverside and City Campus. Follows the English curriculum pathway through IGCSE and A-Level and has a strong public profile for academics, pastoral care, EAL, and SEN support. The two-campus model may suit families differently depending on the child's age and home location. Likely to appeal to families wanting a high-profile British school with strong specialist support systems.

Annual fee

฿670k – ฿1208k

Ages

2–18

Class size

Not publicly listed

Admissions

Highly selective

SISB Thonburi Campus is part of the SISB network and serves families on the west side of Bangkok. It offers a multilingual pathway with English, Chinese, and Thai, using Singapore and UK/Cambridge-influenced progression. The school publishes clear fee tables for the Thonburi campus. Families should verify campus-specific upper-secondary pathways before applying.

Annual fee

฿402k – ฿789k

Ages

2–18

Class size

Not publicly listed

Admissions

Moderate

St Andrews International School Bangkok is a Nord Anglia Education school located across Sukhumvit-area campuses. Follows a British-style school structure and serves students from early years through the senior years. Practical for many families living around Sukhumvit, Phra Khanong, Thonglor, Ekkamai, and On Nut. May suit families wanting a British school within a larger international school network.

Annual fee

฿607k – ฿874k

Ages

3–18

Class size

Not publicly listed

Admissions

Moderate

Thai-Chinese International School is an American curriculum school in Samut Prakan with a trilingual English, Chinese, and Thai identity. It serves pre-kindergarten through high school and may appeal to families who place a high value on Mandarin. Its location near Bang Phli and Mega Bangna makes it more practical for eastern Bangkok and Samut Prakan families. Parents should check ELL, Chinese beginner support, and transport options.

Annual fee

฿370k – ฿490k

Ages

2–17

Class size

Not publicly listed

Admissions

Moderate

Traill International School is an established British curriculum school in the Ramkhamhaeng / Bang Kapi area. It offers a complete pathway through IGCSE and A-Level and publishes a detailed fee schedule. The school also lists ESL/full immersion options and boarding for older students. Parents should carefully calculate extras such as meal plan, ESL, transport, exams, and boarding if relevant.

Annual fee

฿371k – ฿578k

Ages

2–18

Class size

Not publicly listed

Admissions

Moderate

TSI International School is a family-oriented British international school with campuses in Wongwian Yai and Bearing. It offers a pathway from early years through IGCSE and A-Level. The published tuition is comparatively accessible for Bangkok international schools. Parents should check which campus and pathway applies to their child’s year level.

Annual fee

฿240k – ฿330k

Ages

2–18

Class size

Not publicly listed

Admissions

Moderate

VERSO is an American curriculum school in Bang Phli / Samut Prakan with a design-led and project-based learning identity. The campus was created with a strong focus on future-ready skills, collaboration, and flexible learning spaces. However, parents should treat this profile carefully because VERSO is reported to be closing in June 2026, with Wycombe Abbey International School Bangkok opening on the same site in August 2026. For a live parent-facing website, this school should likely be marked as transitioning or archived unless admissions confirms otherwise.

Annual fee

฿528k – ฿764k

Ages

2–18

Class size

Secondary source lists typical class size around 18; verify with admissions.

Admissions

Moderate

Wellington College International School Bangkok is a British curriculum school in the Krungthep Kreetha / Saphan Sung area. It follows the National Curriculum for England and offers a pathway through IGCSE and A-Level. The school emphasizes a holistic British education and smaller-class feel. It may suit families in eastern Bangkok who want a premium British pathway outside the central city.

Annual fee

฿615k – ฿1240k

Ages

2–18

Class size

Small classes are publicly mentioned, but exact class-size numbers were not listed

Admissions

Selective

Wycombe Abbey International School Bangkok is scheduled to open in August 2026 on the former VERSO campus. It will offer a British curriculum pathway with IGCSE and A-Level options, plus day and boarding provision. The school may appeal to families looking for a premium British boarding-style education in Greater Bangkok. Because it is a new Bangkok campus, parents should ask detailed questions about staffing, leadership, subject options, and first-year cohort size.

Annual fee

฿702k – ฿1276k

Ages

2–18

Class size

Not publicly listed

Admissions

Selective

XCL American School of Bangkok Sukhumvit is an American curriculum school in the heart of Sukhumvit. It offers AP courses, project-based learning, and a multicultural school community. The city-centre location is convenient for families living around Thonglor, Phrom Phong, Ekkamai, and Asok. Parents should check ELL, AP, transport, and additional fee costs before applying.

Annual fee

฿453k – ฿809k

Ages

2–18

Class size

Average 16; maximum 16 in Early Years and 22 from Elementary to High School according to secondary profile.

Admissions

Selective