Secondary and sixth form tuition at Bangkok international schools runs roughly THB 260,000 to THB 950,000 per year in 2026. Premium British and IB schools sit at about THB 820,000 to 950,000 (USD 23,000 to 26,500), the upper mid tier at THB 620,000 to 800,000, the mid tier at THB 430,000 to 600,000, and value schools at THB 260,000 to 420,000. Secondary is where Bangkok fees peak, so the headline numbers in our Bangkok international school fees guide track this stage closely. The fuller Bangkok city guide covers schools, neighbourhoods and admissions in detail.
Bangkok pairs genuinely strong senior schools with fees that sit 30 to 40 percent below Singapore equivalents, and the city now hosts more than 90 international schools. At secondary and sixth form the spread is at its widest, because the IGCSE, A Level and IB Diploma years carry the dearest published fee at almost every school. A flagship sixth form place near THB 950,000 sits alongside capable mid tier schools at less than half that figure, and the difference at senior level is mostly the breadth of subject choice and the strength of university counselling rather than the basic quality of teaching. Families reading Bangkok school parent reviews tend to weigh these senior outcomes most heavily.
The bands below are tuition only and are taken from the tier structure in our Bangkok fees guide, with secondary placed at the upper part of each school range. Treat them as planning ranges. The exact fee depends on the school, the year group and whether the child is in lower secondary, the IGCSE years or the sixth form.
| Tier | Annual tuition (THB) | Annual tuition (USD) | Illustrative schools |
|---|---|---|---|
| Premium | THB 820,000 - 950,000 | USD 23,000 - 26,500 | NIST, International School Bangkok, Bangkok Patana, Shrewsbury, Harrow Bangkok, Bromsgrove |
| Upper mid | THB 620,000 - 800,000 | USD 17,400 - 22,400 | Wells International, Ekamai International, BIS Bangkok, KIS |
| Mid | THB 430,000 - 600,000 | USD 12,000 - 16,800 | Various Cambridge and Edexcel schools, mid size IB schools |
| Value | THB 260,000 - 420,000 | USD 7,300 - 11,800 | Smaller bilingual programmes, some emerging IB schools |
School names indicate the fee tier and are illustrative, not a ranking. The Year 13 figure is the highest published fee at almost every Bangkok school, so a family entering at Year 7 should budget for a rising tuition line across the secondary phase rather than a flat number. First year invoices also run higher than tuition because of one off enrolment lines.
Model sixth form tuition against the full cost of place across up to three schools and other stages.
Three things move the senior number. The first is the year group, since the IGCSE years and the sixth form sit at the top of every school scale and Year 13 is invariably the dearest place in the building. The second is curriculum and campus, where established IB continuum schools and the British schools running A Levels cluster at the premium end. The third is fee inflation, which ran an average of 5.4 percent across Bangkok in the 2025 to 2026 cycle, marginally ahead of Thailand general inflation but below Singapore and Dubai. Budget at least 5.5 percent annual fee inflation in forward planning, since a place priced today will cost noticeably more across a five year senior stay.
Headline tuition is only part of the picture, and the senior years carry the heaviest add ons of any stage. The lines to plan for are a one off enrolment fee of THB 50,000 to 200,000 at premium schools, an annual capital levy of THB 25,000 to 60,000, school bus at THB 50,000 to 90,000 per year, a device programme in lower secondary, and external exam entries in the IGCSE, A Level and IB Diploma years. Together these typically add 18 to 22 percent to the headline figure at the premium tier. Our Bangkok fees guide sets out the line items in full, and the relocation cost calculator places them inside a complete family budget. To weigh Bangkok against another posting, the fee comparison tool models several cities at once.
Premium Bangkok schools quote in Thai baht only, so currency exposure stays with families paid in another currency rather than the school. Most groups offer a 5 to 10 percent sibling discount on the second and subsequent children, and several mid tier schools go beyond 15 percent on the third. For a child entering lower secondary the realistic planning figure is the Year 13 fee compounded forward, not the Year 7 invoice, plus the senior exam entries that land in the final two years. The wider international school fee calculator helps translate these bands into a year by year projection.
Secondary and sixth form tuition runs roughly THB 260,000 to THB 950,000 per year in 2026. Premium British and IB schools sit at about THB 820,000 to 950,000 (USD 23,000 to 26,500), the upper mid tier at THB 620,000 to 800,000, the mid tier at THB 430,000 to 600,000, and value schools at THB 260,000 to 420,000.
Yes. Secondary tuition is consistently higher than primary at the same Bangkok school, and the sixth form years carry the highest published fee of all. The gap between lower secondary and Year 13 at a premium school is often THB 80,000 to 150,000 per year.
Expect a one off enrolment fee of THB 50,000 to 200,000 at premium schools, an annual capital levy of THB 25,000 to 60,000, school bus of THB 50,000 to 90,000 per year, a device programme in lower secondary, and external exam entries in the IGCSE, A Level and IB Diploma years. Across the premium tier these add 18 to 22 percent to headline tuition.
Most premium schools run a full secondary and sixth form, including NIST, International School Bangkok, Bangkok Patana, Shrewsbury, Harrow Bangkok and Bromsgrove, alongside many strong mid tier schools across the city. The named schools are illustrative of the tier rather than a ranking.
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