Key facts
| Address | 39/7 Soi Nichada Thani, Samakee Road, Amphur Pak Kret, Nonthaburi 11120 |
| Curriculum | American curriculum with an IB Diploma Programme option in the senior years |
| Age range | PK–12 (Pre-Kindergarten through Grade 12) |
| Founded | 1951 |
| Accreditation | Western Association of Schools and Colleges (WASC); authorised IB World School for the Diploma Programme |
| Boarding | Day school -- no boarding. No school in Nonthaburi runs a boarding house |
| Religious character | None published |
| Tuition | We publish no per-school fee figures -- they are reset annually and directories disagree by large margins. Request the current schedule directly from the school's admissions office, and ask what is billed separately |
| Phone | See the school's official contact page for current admissions and departmental phone lines |
| Official website | www.isb.ac.th |
Overview
International School Bangkok, founded in 1951 on the grounds of the US Embassy, is Thailand's oldest international school and one of the most established American-curriculum schools in the region. It relocated in 1992 to its current purpose-built campus inside the Nichada Thani residential estate in Pak Kret, Nonthaburi, where it remains today. ISB runs a PK-12 American curriculum with an IB Diploma Programme option in the senior years, and has built one of Greater Bangkok's largest, longest-settled expat communities directly around the school itself -- many Nichada Thani families chose the estate specifically for its proximity to campus. BAANLYY is not affiliated with International School Bangkok and takes no paid placement in this guide; confirm all figures directly with the school, particularly current tuition, as fees are reviewed annually.
Highlights
- Thailand's oldest international school, tracing back to 1951
- American curriculum through Grade 12, with an IB Diploma Programme option
- Located inside the Nichada Thani gated residential estate in Pak Kret
- One of the largest, most established expat school communities in Greater Bangkok
Community & where families live
ISB's location inside Nichada Thani means a large share of its student body lives within walking or short-shuttle distance of campus, giving the school an unusually tight-knit, long-settled expat community compared with schools that draw commuting families from across the city. Families relocating specifically for ISB commonly look at housing inside or immediately around Nichada Thani for the shortest possible school run.
FAQ
Where is International School Bangkok located?
Inside the Nichada Thani residential estate in Pak Kret, Nonthaburi, at 39/7 Soi Nichada Thani, Samakee Road.
What curriculum does ISB follow?
An American curriculum from Pre-Kindergarten through Grade 12, with Advanced Placement courses and an IB Diploma Programme option available in the senior years. ISB is accredited by the Western Association of Schools and Colleges (WASC) and is an authorised IB World School.
Can you reach ISB by MRT?
Not to the gate. Nonthaburi is served by two urban rail lines -- the MRT Purple Line since 2016 and the MRT Pink Line monorail since November 2023 -- and the Pink Line's Samakkhi station sits where the line crosses Samakkhi Road, the road ISB is addressed on. But the campus is far east of that junction, inside the gated Nichada Thani estate, and no station is walkable from it. The accurate position is that the district is no longer without rail, while this particular school run still is: the near-universal answer for ISB families remains to live inside or beside Nichada Thani and travel a short distance by car, bike or on foot.
How much does ISB cost?
BAANLYY does not publish per-school fee figures. Tuition is reset annually, varies by year group, and third-party directories routinely disagree with each other and with the school's own current schedule by large margins -- a confidently wrong number is worse for a relocating family than no number. ISB bills one-time application, assessment and registration fees separately from tuition, and uniforms, transport, meals and activities separately again. Request the current schedule in writing from the school's admissions office, and ask specifically what is not included.
Sources & References
School facts are drawn from the school's own official website plus independent cross-checks. BAANLYY is a data-and-tools platform, not a school, agent or admissions consultant; never takes paid placement in this content, and does not guarantee current tuition, admissions or accreditation status — always confirm directly with the school before relying on any figure here.
Read the full Nonthaburi international schools guide for how International School Bangkok (ISB) compares with the area's other schools, including Denla British School and International Christian School Nonthaburi (ICSN).
