Thailand's capital Bangkok is one of those cities that parents arrive in for a two-year contract and end up staying in for a decade. There are good reasons for that, and schools are one of them. With 97 international schools tracked on Scholae — offering 30 distinct curricula across every price point from surprisingly affordable to genuine luxury — the Thai capital gives families more real choice than nearly any city in Southeast Asia.
But choice can be paralyzing, especially when you're trying to sort through dozens of schools from a different time zone while simultaneously negotiating a relocation package. This guide is meant to cut through the noise. It draws on real school data, actual fee ranges, and the kind of practical detail that matters when you're the one doing the school run.
Explore all Bangkok international schools to search by curriculum, age group, or fee range.
The curriculum landscape: What's actually on offer
Bangkok's international school market is dominated by three curriculum families — British, IB, and American — but the variety runs deeper than that. Here's what you'll find and what it means in practice.
British curriculum
The British system is the single most common offering in Bangkok, and it's not close. Dozens of schools follow the English National Curriculum through Key Stages, leading to IGCSEs at Year 11 and A-Levels at Year 13. The appeal is structure: parents know what to expect at each stage, and universities worldwide recognise the qualifications without question.
Bangkok has British schools at every price tier. At the top end, Harrow International School Bangkok, Shrewsbury International School Bangkok, Brighton College Bangkok, and King's College International School Bangkok are UK heritage brands that have established well-regarded campuses here. In the mid-range, schools like Bromsgrove International School Thailand, Traill International School, and Charter International School deliver solid British education without the premium-brand pricing.
The honest downside of A-Levels is specialisation: students narrow to three or four subjects at age 16, which suits some kids and frustrates others. If your child hasn't found their academic identity yet, the IB Diploma's broader approach might be a better fit.
International Baccalaureate (IB)
Bangkok has a strong IB scene, with schools offering the full continuum — PYP (primary), MYP (middle years), and the Diploma Programme or Career-related Programme (CP) for seniors. The IB's emphasis on inquiry-based learning and international-mindedness has genuine appeal for globally mobile families who may move again.
NIST International School is the flagship IB school in Bangkok, founded with UN support in 1992 and averaging 36.1 points on the IB Diploma in 2024 (well above the global average of 30.5). It's non-profit, has 1,816 students from 77 nationalities, and sits right on Sukhumvit Soi 15. KIS International School is another strong IB option — smaller at 750 students, with an impressive 37.0-point IB average and a more intimate community feel.
International School Bangkok (ISB), the city's oldest international school (founded 1951), runs both IB and AP tracks. It's the school that most closely resembles a large American independent school, with 1,860 students and 60 nationalities, located out in Nonthaburi's Nichada Thani compound.
Other IB options include Concordian International School, Ruamrudee International School, D-PREP International School, and Wells International School.
American curriculum
Several Bangkok schools follow an American model with AP (Advanced Placement) courses in the upper years. BASIS International School Bangkok — part of the US charter school network known for academic rigour — opened in 2019 and is still small (130 students), but it's growing and worth watching. Berkeley International School runs a straightforward American curriculum for 400 students near Bangna.
Faith-based American schools are also well-represented. International Community School Bangkok offers American curriculum with AP and a Christian ethos, while Bangkok Christian International School and Ekamai International School serve families who want academic quality within a values-driven community.
Other options worth knowing about
- French: Lycee Francais International de Bangkok follows the French national curriculum and caters primarily to francophone expats.
- Singaporean: Glory Singapore International School combines British and Singaporean approaches, with a strong trilingual emphasis (English, Thai, Chinese).
- Canadian: Canadian International School of Thailand offers the IB continuum within a Canadian educational framework.
- Montessori: Montessori Academy Bangkok International School and John Wyatt Montessori provide alternatives for families who want child-led, project-based learning.
- Bilingual Thai: Amnuay Silpa School and Sarasas Ektra School blend international curricula with Thai language and culture, which can be valuable for mixed Thai-expat families or longer-term residents.
- Trilingual: Thai-Chinese International School runs an American curriculum delivered in English, Thai, and Chinese — a distinctive model for families who value Mandarin acquisition.
What you'll actually pay: Fee ranges in Bangkok
Bangkok's fee spectrum is one of the widest in Asia, which is genuinely good news. There's quality available at every price point, though what you get at each tier differs in predictable ways.
Budget tier: THB 120,000–300,000/year (USD 3,500–8,500)
Schools in this range tend to be smaller, younger institutions or those located outside the central Sukhumvit corridor. AIT International School near Pathum Thani charges around THB 122,500–146,500 (roughly USD 3,500–4,250) for its American-curriculum programme — one of the most affordable international options in the city. Knightsbridge House Nonthaburi, opening in 2025 with a British curriculum, lists fees around THB 226,000 (about USD 6,300).
At this tier, expect smaller campuses, fewer specialist facilities (you probably won't find an Olympic pool), and classes that may lean more heavily local in their student mix. But teaching can be perfectly good, and the intimate community size is something many families actively prefer.
Mid-range: THB 300,000–650,000/year (USD 8,500–18,000)
This is where most expat families land, and the sweet spot for value. Schools like Traill International School (British, FOBISIA-accredited, 30 nationalities), Charter International School (British, A-Levels and IGCSE, about 280 students), and Bromsgrove International School Thailand (British, 500+ students, FOBISIA member) fall in this bracket. You'll get proper sports facilities, a genuine international mix, experienced teachers, and established accreditations.
Many American and IB schools also sit in this range. Wells International School (IB and AP, 510 students on the On Nut campus) and Pan-Asia International School offer the IB framework without the premium-school pricing.
Premium: THB 650,000–1,000,000/year (USD 18,000–28,000)
This is where you'll find the large, established institutions with purpose-built campuses, deep extracurricular programmes, and impressive facilities. Bangkok Patana School — 2,319 students, 68 nationalities, a dance academy with eight studios, three swimming pools, and a 600-seat theatre — is the archetype. NIST International School (1,816 students, over 300 extracurricular activities) and ISB (1,860 students, average class size of 17) also sit here.
St Andrews International School Bangkok (2,405 students, 70 nationalities, Nord Anglia network) and Bangkok International Preparatory & Secondary School (1,650 students, 150+ clubs) offer the scale and breadth that some families want.
Ultra-premium: THB 900,000–1,500,000+/year (USD 25,000–43,000+)
The very top tier. Harrow International School Bangkok (1,622 students, the first Harrow overseas school, founded 1998) and Shrewsbury International School Bangkok (1,785 students, riverside campus with Olympic-standard aquatics centre) charge fees that rival Singapore's top schools. Brighton College Bangkok (760+ students, 50-metre swimming pool, IOC-approved athletics track) sits here too. Glory Singapore International School lists fees of THB 912,000–1,500,000 (about USD 26,400–43,500).
At this level, you're paying for heritage branding, exceptional facilities, very high teacher retention, and a student body that skews heavily international. Whether that premium is worth it depends on your family's priorities and, frankly, whether your employer is covering the bill.
Schools to put on your shortlist
Here are 12 schools that represent the range of what Bangkok offers. This isn't a ranking — it's a starting point for families at different stages of their search.
Bangkok Patana School
British + IB | Ages 2–18 | 2,319 students | 68 nationalities Founded in 1956, Patana is the grand old institution of Bangkok's international school scene. It runs the British curriculum through IGCSE, then offers the IB Diploma for Years 12–13. The campus on La Salle Road (Sukhumvit 105) is enormous — purpose-built science centre, dance academy, outdoor classroom in a closed canopy forest. Class sizes are capped at 20–23 depending on year group, with a 1:10 teacher-student ratio. Waiting lists are common from Nursery through Year 2.
NIST International School
Full IB (PYP, MYP, Diploma) | Ages 3–18 | 1,816 students | 77 nationalities The premier IB school in Bangkok, and arguably in Southeast Asia. Founded with UN support, NIST is non-profit and genuinely international — 75% of students are non-Thai, and the school offers mother-tongue support in over a dozen languages including Danish, Hebrew, and Swedish. The 2024 IB Diploma average of 36.1 speaks for itself. Located on Sukhumvit Soi 15, which means walkable from Asoke or Nana BTS.
International School Bangkok (ISB)
IB + American + AP | Ages 3–18 | 1,860 students | 60 nationalities Bangkok's oldest international school, founded in 1951. ISB sits in the Nichada Thani compound in Nonthaburi — suburban, green, and spacious in a way that central Bangkok can't match. The school runs both IB Diploma and AP Capstone, which gives students unusual flexibility. Average class size of 17 is notably small for a school this large. The 2024 IB average of 34.0 is solid. The trade-off is location: Nichada is a 30–45 minute drive from central Sukhumvit, which shapes your housing decisions.
Harrow International School Bangkok
British, IGCSE, A-Levels | Ages 1–18 | 1,622 students | 37 nationalities The first Harrow school to open outside England (1998), set on a large campus in Don Muang with sports fields, a sailing lake, and a climbing wall. British Schools Overseas accredited. The student body is 80% Thai, which gives the school a different character from the Sukhumvit-based internationals. If you value the British public school tradition — houses, formal assemblies, emphasis on character — Harrow delivers it with conviction.
Shrewsbury International School Bangkok
British, IGCSE, A-Levels | Ages 3–18 | 1,785 students | 40 nationalities A riverside campus on Charoen Krung Road with facilities that impress even jaded school shoppers: three natural turf sports fields, Olympic-standard aquatics centre, three-court sports hall, gymnastics facility, squash courts. The student body is about 75% Thai and 25% international. FOBISIA member. One-to-one iPad/laptop programme from Year 4.
St Andrews International School Bangkok
British + IB + BTEC + IGCSE | Ages 2–18 | 2,405 students | 70 nationalities Part of the Nord Anglia Education network, which brings connections to Juilliard (performing arts), MIT (STEAM), and UNICEF. With 2,400+ students and 70 nationalities, it's one of the most diverse schools in the city — 57% international. Located on Sukhumvit Road in Phra Khanong. The curriculum flexibility is a standout: students can pursue IGCSE, IB, or BTEC pathways depending on their strengths.
KIS International School
Full IB (PYP, MYP, CP) | Ages 3–19 | 750 students | 56 nationalities A smaller IB school with an outstanding academic track record — 37.0 IB Diploma average in 2024, the highest among Bangkok schools on Scholae. The campus in Huai Khwang feels like a community, with an average class size of 15. KIS also offers the IB Career-related Programme (CP), which is less common and valuable for students who want a more applied, vocational pathway alongside academic rigour.
Brighton College Bangkok
British, A-Levels | Ages 2–18 | 760+ students | 50 nationalities The Bangkok outpost of the well-known UK school, located in the Krungthep Kreetha area. The campus is built for sport: Olympic-standard 50-metre pool, IOC-approved athletics track, four tennis courts. Brighton also has a second campus on Vibhavadi for families in the north of the city. The school is still establishing its exam track record but invests heavily in facilities and teacher recruitment.
Ruamrudee International School (RIS)
IB + American | Ages 2–18 | 1,146 students | 23 nationalities The first school in Thailand to earn WASC accreditation, Ruamrudee has been educating international students since 1957. The campus in Minburi is expansive — two FIFA-certified turf fields, Olympic-sized pool, 68 athletic teams. Average class size of 12 is the smallest among the large schools, which translates to genuine individual attention. The trade-off, like ISB, is distance from central Bangkok.
Concordian International School
IB | Ages 2–18 | 1,014 students | 20 nationalities A trilingual school (English, Thai, Chinese) offering the IB framework. Concordian sits in the Bangna-Trad corridor, which is increasingly popular with expat families who want more space and lower housing costs than Sukhumvit proper. EARCOS member, with an average class size of 16. The trilingual model is particularly appealing for families who want their children to pick up Mandarin alongside English.
Bromsgrove International School Thailand
British, IGCSE, A-Levels | Ages 2–18 | 500+ students | 27 nationalities A FOBISIA-accredited British school set within the Windsor Park Golf Club compound in Minburi. Bromsgrove offers a proper British education at mid-range fees, with class sizes of around 20. It's a solid option for families who want the British pathway without paying heritage-brand premiums. Scholarships are available, which is relatively uncommon among Bangkok internationals.
D-PREP International School
IB (PYP) + American + AP | Ages 2–18 | 310 students | Bang Phli D-PREP is a newer school that blends IB Primary Years with an American upper school (including AP). The campus features an Olympic-sized pool, fly yoga room, and rooftop garden — it's designed for a modern, whole-child approach. The Reggio Emilia influence in early years and Expeditionary Learning in middle school make this feel different from the traditional options. Small enough that every family knows each other.
Neighbourhoods: Where to live for the school run
In Bangkok, your housing choice is basically a school commute decision. Traffic here is legendary for good reason, and a 5-kilometre distance can mean 45 minutes in the wrong direction at the wrong time.
Sukhumvit (Asoke to Ekkamai)
The expat epicentre. Families cluster between Soi 15 and Soi 63 (Ekkamai) for good reason: NIST is on Soi 15, St Andrews is on main Sukhumvit, and dozens of other schools are accessible via the BTS Skytrain. The trade-off is density and cost — apartments here are the priciest in Bangkok, and street-level congestion is constant. That said, you can genuinely walk or take the BTS to school, which is worth a lot.
On Nut to Bangna (lower Sukhumvit)
More spacious, more affordable, and increasingly popular with expat families. Wells International School sits on Sukhumvit near On Nut, and the Bangna corridor gives you access to Bangkok Patana, Berkeley International School, and several others. Housing costs drop meaningfully once you pass Ekkamai, and you get larger apartments or even townhouses for the same budget.
Sathorn and Yen Akart
The diplomatic and corporate quarter. Garden International School is right on Yen Akart, and the area is quieter and greener than Sukhumvit. King's College International School is also in the Sathorn district, on Ratchadaphisek Road. This neighbourhood works well for families with one parent working in the Silom/Sathorn financial district.
Nichada Thani (Nonthaburi)
A gated expat compound in Nonthaburi province, about 30 minutes north of central Bangkok. ISB is here, and the compound has its own shops, restaurants, and swimming pools. It's a distinctly suburban lifestyle — American families in particular tend to gravitate here. The downside is that you're dependent on a car for anything outside the compound, and getting into central Bangkok takes commitment.
Krungthep Kreetha / Ramkhamhaeng
The eastern corridor is home to Brighton College Bangkok, Traill International School, and several others. Housing is more affordable, the area has a local Thai character that some families love, and newer developments are springing up around the schools. Traffic heading west into the city centre can be grim, though, so this works best if your life orbits around the school and the eastern suburbs.
Admissions: Timing, waitlists, and what to expect
When to apply
Most Bangkok international schools accept rolling admissions, which means you can technically apply at any point during the year. But "rolling" doesn't mean "immediate" — popular schools at popular year groups have waiting lists, and the further ahead you apply, the better your chances.
For the top-tier schools (Patana, NIST, ISB, Harrow, Shrewsbury), you should ideally begin the process 12–18 months before your intended start date. Bangkok Patana notes that waiting lists are particularly long from Nursery through Year 2 and again in Years 4–12. NIST's application cycle begins in September for the following academic year, with a December deadline for Bangkok-based families.
For mid-range schools, 3–6 months of lead time is usually sufficient, and many will accommodate mid-year arrivals with seats available.
Entrance assessments
Almost every school requires some form of evaluation. The specifics vary:
- Early years (ages 2–5): Typically a play-based observation or school-readiness assessment. Bangkok Patana, for example, does not require an academic test for new entrants but assesses English fluency and school readiness.
- Primary (ages 5–11): Schools commonly use a combination of classroom observation, reading and maths assessments, and teacher references from the previous school.
- Secondary (ages 11–18): Expect cognitive aptitude tests (CAT4 is common in British schools), English proficiency assessments, and sometimes subject-specific tests. King's College, for instance, uses group assessments for Years 1–3 and cognitive aptitude testing from Year 4.
English language requirements
Bangkok's top schools teach primarily in English and expect incoming students to have functional English or the ability to develop it quickly. Most schools offer EAL (English as an Additional Language) support, but capacity varies. NIST has dedicated EAL programmes for both PYP and MYP levels, plus speech-language therapy and occupational therapy — that breadth of support is not universal.
If your child has limited English, ask specifically about the school's EAL programme during your visit: how many dedicated EAL teachers they have, whether students are pulled out of classes or supported within them, and what the typical timeline is for children to transition to mainstream instruction.
Thai student caps
One regulatory detail worth knowing: Thai students are technically capped at 20% of enrollment in international schools (Bangkok Patana explicitly states this policy). In practice, many schools have a higher proportion of Thai students — Harrow is 80% Thai, Shrewsbury about 75%. The cap affects admissions timing for Thai nationals specifically; Bangkok Patana, for instance, has a January 15 registration deadline for Thai national applicants for the following year.
Practical considerations
School buses: Nearly universal in Bangkok, and most families use them regardless of distance. Schools like NIST, Patana, and St Andrews all operate extensive bus networks. Factor in the cost (it's usually extra, ranging from THB 30,000–80,000/year depending on distance) and the time your child will spend on the bus.
School lunches: Most international schools provide lunch, often with Western and Thai options. Dietary alternatives for allergies and religious requirements are standard at the larger schools. A few schools charge lunch separately; others include it in fees.
Uniforms: Required at virtually every international school in Bangkok. Budget for initial uniform costs (typically THB 5,000–15,000 for a full set) and replacement as children grow.
Academic calendar: Most schools follow a Northern Hemisphere calendar (August–June), though a few align with the Thai academic calendar (May–March). Check this carefully if you're arriving mid-year — starting in January at an August-start school means joining mid-way through the year.
Finding the right fit
Ninety-seven schools is a lot to process, and no blog post can substitute for visiting campuses, talking to current parents, and watching your child's face during a trial day. But the data can narrow your search dramatically before you ever board a plane.
Start with the Bangkok city page on Scholae to filter by curriculum, age range, and fee bracket. Once you've got a shortlist of four or five schools, use the compare tool to see them side by side — class sizes, student nationalities, accreditations, and facilities laid out in a single view.
Bangkok rewards families who do their homework (pun intended). The right school is out there — and at Bangkok prices, you might find you're getting a better education for your money than anywhere else in the region.
