Schools
What are the best international schools in Bangkok?
Bangkok has one of Asia's deepest international-school markets. The schools BrightKey profiles include Harrow Bangkok, Bangkok Patana (Thailand's oldest British school), International School Bangkok (ISB, the oldest, American + IB), Shrewsbury, NIST (full IB continuum) and Bangkok Prep. Thailand has no public school inspectorate, so BrightKey tiers on verifiable accreditation (CIS/WASC/NEASC) and caps most schools at A — the exception is Harrow Bangkok, which carries a genuine British Schools Overseas (BSO) 'Outstanding' inspection (March 2023), an S-tier route. The right school depends on curriculum (British vs IB), the child, and budget — not a single ranking.
Curriculum is the first filter: Harrow, Shrewsbury and Bangkok Prep are British (IGCSE/A-Level); Patana runs the English curriculum into the IB Diploma at sixth form; ISB is American with both AP and IB; NIST is a full IB continuum (PYP/MYP/DP). Harrow is also the rare Bangkok school with genuine boarding.
BrightKey takes no payments from schools and never tiers on placement claims — any university-destination or exam-result figures schools publish are flagged 'school-reported, unverified'. Use accreditation depth (and Harrow's BSO band) as your floor, then choose on fit, location and fees, which span from mid-market to among the region's most premium.
Reviewed by Priscilla Han. BrightKey is independent and takes no payment from schools or universities. Editorial standards.