Okinawa Christian School InternationalTuition, Admissions & Curriculum
William Michihiko Akiyama
William Prep
Okinawa, Japan
One of the closest international schools to the Okinawa Institute of Science and Technology (OIST) — reportedly the largest in Okinawa by enrolment.
Last reviewed by William Prep: 2026-09-24
OCSI is reportedly Okinawa's largest international school, enrolling roughly 600 students. It holds both WASC accreditation (reportedly since 1981) and ACSI (Association of Christian Schools International) accreditation (reportedly since 1992).
At a Glance
| Enrolment | ≈600 (reportedly the largest in Okinawa) (not independently confirmed)as of: 2026-09-24 |
| WASC Accreditation | 1981 (reported) (not independently confirmed)as of: 2026-09-24 |
| ACSI Accreditation | 1992 (reported; not one of the six university-eligibility bodies) (not independently confirmed)as of: 2026-09-24 |
| Est. First-Year Cost (K-G5) | ≈¥1. 43M2025-26 · as of: 2026-09-24 |
01Tuition & Fees
Fees: A Real First-Year Total of About ¥1. 43M (Elementary)
OCSI's own fee PDF (2025-26) lists three one-time charges: a ¥20,000 application fee, a ¥20,000 interview/testing fee, and a ¥240,000 enrollment fee (first child). On top of that, an annual PTF fee (¥3,000), facility fee (¥100,000), and materials fee (¥50,000) apply alongside grade-banded tuition (¥1,000,000 for Elementary K-G5), for a genuine first-year total of roughly ¥1,433,000. OIST/SOFA-affiliated families get a 50% enrollment-fee discount. Paying 10 months of tuition in a lump sum by August 10 earns a 2% discount.
academic year: 2025-26
| Application Fee | ¥20,000 |
| Interview/Testing Fee | ¥20,000 |
| Enrollment Fee (first child) | ¥240,000 |
| PTF Fee (annual) | ¥3,000 |
| Facility Fee (annual) | ¥100,000 |
| Materials Fee (annual) | ¥50,000 |
| Technology Fee (annual, G4+) | ¥20,000 |
| Tuition (Elementary K-G5)K-G5 | ¥1,000,000 |
| Tuition (Middle School G6-8)G6-G8 | ¥1,040,000 |
| Tuition (High School G9-12)G9-G12 | ¥1,080,000 |
| Estimated First-Year Total | ¥1,433,000 |
Includes: application, examination, enrolment, other, facilities, tuition — Excludes: Excludes the technology fee (not applicable below Grade 4), lunch, and ESL fees (¥140,000, only if required). This uses Elementary (K-G5) as the base.
02Admissions
| Cycle | 未確認 not publicly confirmed |
University Entrance Eligibility in Japan
| School-accreditation route | Yes (not independently confirmed) |
| Student-qualification route (IB, etc.) | No not publicly confirmedWhether OCSI offers the IB or another curriculum that would trigger the individual-credential route is not publicly confirmed. |
WASC accreditation is based on third-party reporting, not confirmed against the registry directly in currently available public information. ACSI accreditation is not among the six MEXT-recognised bodies and carries a different meaning, unrelated to the university-eligibility route.
What Japanese Families Should Know
Questions to Ask the School
1.What is the current status of WASC and ACSI accreditation, and when is the next review?
Why this matters: Public information does not establish this clearly; confirm it directly with the school.
2.Does the school offer the IB or another curriculum that triggers the individual-credential route?
Why this matters: Public information does not establish this clearly; confirm it directly with the school.
03Curriculum
04School Features
Don't Conflate WASC and ACSI Accreditation
OCSI reportedly holds both WASC and ACSI accreditation. What's easy to miss: ACSI is actually one of the six bodies MEXT recognises for the school-accreditation route to Japanese university eligibility (alongside WASC, CIS, NEASC, Cognia, COBIS). So for OCSI specifically, both accreditations could independently matter for eligibility — a relatively unusual case.
Key Point
Many write-ups on Christian-affiliated schools frame ACSI accreditation purely as "quality assurance for faith-based education" — but ACSI is, in fact, one of the six MEXT-recognised bodies for the school-accreditation eligibility route. A school like OCSI holding both WASC and ACSI is worth understanding accurately on that point. That said, both accreditation claims here rest on third-party reporting — neither registry was checked directly in currently available public information.
What Makes This School Distinctive
Two accreditations, both potentially relevant to eligibility routes
Holds both WASC (1981) and ACSI (1992) accreditation
ACSI is one of MEXT's six recognised bodies, not just a faith-education quality marker.
Worth understanding accurately for families weighing the school-accreditation eligibility route.
Who Might Find This School a Good Fit
Might suit — OIST-affiliated families, or families in Okinawa seeking a Christian educational environment
Might not suit — Families planning around the IB Diploma (an IB offering is not publicly confirmed)
Explore Other Schools
- Okinawa International School (OIS)Naha / Nanjo (two campuses)
- American School in Japan (ASIJ)Chōfu
- Tokyo Metropolitan Kokusai High School (Kokusai-kō)Meguro-ku
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