International schools in Bangkok: how to compare
Most families start with a list of names they heard from colleagues. That list is a fine starting point, but it tends to skew toward a few large schools. A better shortlist comes from fixing your constraints first and only then looking at names.
Start with the commute
Bangkok traffic decides more school choices than any curriculum debate. A school 12 kilometres away can mean an hour each way at 7 am. Many families pick a home and a school together for this reason. The main clusters are central Sukhumvit, the Bangna-Trad corridor running toward Suvarnabhumi airport, the northern areas around Vibhavadi Rangsit and Chaeng Watthana, and the riverside and Sathorn area.
School bus routes help, but ask how long the longest route takes and when pick-up starts. Some routes leave before 6:30 am.
Pick a curriculum family
Schools in Bangkok mostly follow one of three models. British schools run the English National Curriculum through IGCSE and A level. American schools teach a US-style programme with a high school diploma, often with Advanced Placement courses. IB schools use the Primary Years, Middle Years and Diploma programmes, though many British and American schools offer the IB Diploma as their final two years.
If you expect to move again, the curriculum your child will meet in the next country matters more than which one is "best". A child moving to the UK at 14 will have an easier time coming from a British school. A child heading to the US for university can come from any of the three.
Check licensing and accreditation
Every international school in Thailand needs a licence from the Ministry of Education, issued through the Office of the Private Education Commission. Accreditation is separate. American schools tend to hold WASC or NEASC accreditation, British schools often have a British Schools Overseas inspection or COBIS membership, and IB schools are authorised by the IB itself. Membership of the International Schools Association of Thailand is another useful signal. Ask the school which bodies have accredited it and when the next visit is due.
Read the fee schedule line by line
Published tuition is rarely the full cost. Look for a one-off application fee, a registration or entrance fee, a capital levy or development fee, and a refundable deposit. Buses, lunch, uniforms, trips and exam fees usually come on top. Some schools offer a discount for siblings or for paying a full year at once. Ask for the whole schedule in writing before you compare two schools on price.
Visit, and visit on a normal day
Open days are useful, but a tour on an ordinary school morning tells you more. Watch how teachers talk to children in the corridor. Ask what share of teachers stayed from last year, how large classes are in your child's year group, and what support exists for children who are still learning English.
Where to find fuller data
A directory like this one covers a handful of schools. For side-by-side comparison of curricula, fees and locations across the city, the International Schools DB guide to schools in Bangkok lists far more schools than we can. Its annual round-up of top international schools in Bangkok for 2026 is a reasonable place to see which names come up most often, before you start booking visits.