International school fees · Chiang Mai · 2026-27
Prem Tinsulanonda International School fees 2026-27: 730,000 THB a year (£16,257)
Mae Rim, Chiang Mai · ages Early Years to Grade 12 (boarding and day) · IB (Diploma Programme and Career-related Programme referenced in fee PDF) · checked 27 October 2026
- Tuition, Grade 6-7730,000 THB
- Application fee, paid once6,000 THB
- Foundation fee, paid once130,000 THB
- First year, not refundable866,000 THB
- Plus security deposit, refundable50,000 THB £1,114
At the 12-month low of 41.876 this first year was £20,680. At the high of 45.194 it was £19,162.
Source: ptis.ac.th (pdf), the school’s own fee schedule. Checked 27 October 2026. Refundable deposits are shown separately and are not in the total. Optional extras, trips, transport and uniform are not in it either.
What a year costs here.
Prem Tinsulanonda International School charges 730,000 THB a year for Grade 6-7 in 2026-27: about £16,257 at 44.9 baht to the pound. Non-refundable one-off fees add 136,000 THB, plus 50,000 THB of refundable deposits, so the first year at this year group costs about 866,000 THB (£19,286). Figures are from the school's own fee schedule, checked 27 October 2026.
Prem Tinsulanonda International School is an international school in Mae Rim, Chiang Mai, following the IB (Diploma Programme and Career-related Programme referenced in fee PDF), taking children aged Early Years to Grade 12 (boarding and day). The figures on this page are the school's own published fees for 2026-27, converted to pounds at the mid-market rate on the day The Baht last rebuilt this page. Nothing here is an estimate: where the school does not publish a number, the line is left blank.
Rate used at build: 44.9 THB per GBP, Latest daily mid-market snapshot · 10 November 2026.
Tuition by year group.
Tap a row for the source and the sum.
Every row above is from the school's own fee schedule at ptis.ac.th (pdf), read on 27 October 2026. Nothing is estimated or taken from a third-party site.
One-off fees and deposits.
Same source and date as the tuition table: ptis.ac.th, checked 27 October 2026.
Recurring extras the school lists.
Source: ptis.ac.th, checked 27 October 2026. Amounts are per year as the school states them.
What the fee schedule says.
- Payment. Four terms; at least one term's tuition payable before starting; 2% reduction if tuition and boarding are paid in full for the year.
- Boarding (optional): weekly 350,000 per year, full 478,000 per year, temporary 2,250 per day/night for day students; boarders need a 20,000 contingency account. Sibling reduction on tuition and boarding: 2nd child 10%, 3rd 15%, 4th 20%, 5th 50%. Other fees: transport 17,100-20,700 per term (day students); EAL support fee 22,000 (period not stated); one-to-one learning support 25,000-30,000 per month; IB exam and course fees extra; visa fees for boarders 6,000 or 24,000. terms x per-term equal the printed annual figures.
- How the figures were read: pages 2-4 read as text.
What it costs in pounds, and why that moves.
The school bills in baht. A British family paying from sterling income pays a different amount every term because GBP/THB moves. The same Grade 6-7 fee of 730,000 THB is:
| GBP/THB | Annual fee in pounds |
|---|---|
| 48 | £15,208 |
| 44.9 (today) | £16,257 |
| 42 | £17,381 |
Between a strong-pound year and a weak one the sterling cost of this school moves by about £2,173 a year per child. A family paying termly from a UK account at a high-street bank's 3 to 5 per cent spread adds £650 a year on top. Fee payments are the single largest transfer most expat families make, which is why the transfer method matters more here than anywhere else in the budget.
A termly 243,333 THB transfer at the mid-market rate costs a fraction of a bank's spread. Compare the GBP to THB quote before the first invoice.
Schools in Chiang Mai at a similar fee.
Source: each school’s own fee page; open a school for its source and checked date.
Side by side: Prem vs Lanna · Prem vs SISB Chiang Mai · Prem vs Panyaden · Prem vs CMIS.
All Chiang Mai schools, cheapest first, with the median and range: international school fees in Chiang Mai. The national picture is on Thailand international school fees 2026-27: the statistics.
Report a figure, read the method.
What did you actually pay at Prem Tinsulanonda International School?
Published figures are the starting point; the real bill is what readers tell us. Reports are checked by hand before anything appears here, and no name or email is published.
Reading the fee schedule
- The hidden fees catalogue: the £30,000 to £70,000 your school will charge that is not in the tuition schedule.
- The fee inflation trap: how £18,000 in Year 1 becomes £32,000 by Year 13.
- The British family's decision framework for international schools in Asia.
- Where the £25,000 actually goes: the international school operating budget nobody publishes.
How The Baht records school fees
Every figure comes from the school's own website or fee document, recorded with its URL and the date it was checked. Figures are annual tuition as the school states them, in Thai baht, for the academic year shown. Where a school prints termly fees only, the annual figure is the termly fee multiplied by the number of terms and is marked as such. Refundable deposits are listed but excluded from first-year totals. Pound figures use the mid-market GBP/THB rate on the day the page was built (Latest daily mid-market snapshot · 10 November 2026) and are rounded to the nearest pound. Fee schedules change every year, usually between March and July; the checked date on this page is the date the figures were last read from the school's site. Corrections: editorial@thebaht.com.
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