True Annual Cost · Koh Samui
True annual cost of international schools in Koh Samui
Updated 2026-04-26 · 7 schools with full cost data · 7 schools indexed
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7 international schools in Koh Samui have full cost data published. Median published tuition is $6,396 USD per year, while median true annual cost (with capital levy, registration, transport, uniform, technology and activity fees) runs $7,896 USD — roughly 23% above published tuition. Cheapest in the table: Oonrak Koh Samui School at $4,453 USD/year true cost. Most expensive: International School of Samui at $17,115 USD.
True-cost dataset · Source: Official international-school fee schedules + IBO, COBIS & CIS accreditation registries · Last verified Apr 27, 2026 (6 weeks ago) · Verify fees, admissions, and current enrollment directly with the school's admissions office.
Key facts
- 7 schools with full cost data published tuition + WhereNext-modeled true annual cost (registration, transport, uniform, activities).
- Median tuition: $6,396/yr published headline tuition midpoint.
- Median true cost: $7,896/yr ~23% above the published tuition median.
- Cheapest: Oonrak Koh Samui School $4,453/yr true annual cost.
- Most expensive: International School of Samui $17,115/yr true annual cost.
Schools ranked
7
Median tuition
$6.4k
Median true cost
$7.9k
Median hidden fees
+23%
Curriculum mix
Schools ranked by true annual cost (cheapest first)
| # | School | Tuition USD | True cost |
|---|---|---|---|
| 1 | Oonrak Koh Samui School | $3,194-$3,611 | $4,453 |
| 2 | École Privée Française à Koh Samui | $2,778-$4,722 | $4,800 |
| 3 | Lamai International School | $3,750-$5,000 | $5,425 |
| 4 | Windfield International School Koh Samui | $5,241-$7,550 | $7,896 |
| 5 | Greenacre International School | $5,250-$7,833 | $8,042 |
| 6 | PBISS International School | $7,492-$12,479 | $11,486 |
| 7 | International School of Samui | $13,746-$17,183 | $17,115 |
How we calculate true cost
The True Annual Cost takes the school’s mid-point USD tuition and adds city-calibrated extras for transport, uniform, registration recurrent, lunch, technology fee, and activity fees. The number is scaled by tier — premium-tier schools tend to charge proportionally higher capital levies and ancillary fees than budget schools.
Read the full True Annual Cost methodologyBest value in Koh Samui
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All schools in Koh Samui
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