Nishimachi International School
🇯🇵 Tokyo · Founded 1949 · American / Japanese / Blended · Ages 5–15
A small, prestigious, central-Tokyo bilingual day school (K–9) with 75+ years of heritage and genuine dual WASC + CIS accreditation — distinctive for a deep, leveled Japanese-language programme, but note it ends at Grade 9, so high-school placement must be planned separately.
Curricula
American, Japanese, Blended
Age range
5–15
Languages of instruction
English, Japanese
Annual fees
SGD JPY 3,129,000
Enrollment
468
Boarding
No (day school)
Accreditations
WASC, CIS
Tier Profile
We only tier dimensions backed by a public inspection verdict or verifiable accreditation. Other dimensions show a data flag — never a guessed score.
BrightKey's Assessment
Nishimachi International School was founded in 1949 in Moto-Azabu, Minato-ku, central Tokyo, and is one of Japan's longest-established international schools. It enrolls 468 students with 55 teachers (a published 1:7 ratio, ~20 per class), operating as an English-medium school with a strong, structured Japanese-language and culture programme that defines its bilingual identity.
The school spans Kindergarten through Grade 9 only: Elementary (K–5) and Middle School (6–9). It is not a through-18 school and has no high school. Its official Middle School page confirms Grade 9 students are 'at the top of the school' and graduate from Nishimachi, then move on to an international high school in Tokyo or a school in another country. IB, A-Levels, or other high-school qualifications are therefore outside Nishimachi's scope.
The curriculum maps to an American/international English-medium model blended with a substantial Japanese strand (Japanese Language and Japanese Social Studies, leveled to each student's proficiency). No IB or Cambridge authorisation appears on the school's public pages. Accreditation is solid: the official guiding-statements page names both CIS and WASC, alongside EARCOS, JCIS and WIDA memberships.
Fees are fully published for SY2026–27: annual tuition of JPY 3,129,000, plus one-time entrance fees (JPY 300,000 registration + JPY 825,000 building maintenance) and annual Education Enhancement / School Growth Fund fees. Partial/full Outreach scholarships exist.
Why These Ratings?
Inspection & AccreditationA — Excellent
Genuine dual CIS + WASC accreditation — strong for a Japanese international school. Japan has no public inspectorate, so the tier reflects accreditation depth — A.
Strengths & Trade-offs
Strengths
- Genuine dual accreditation (WASC + CIS) — strong for a school with no public inspectorate available
- Deep, leveled English–Japanese bilingual programme — Japanese is a core academic strand, not a token language class
- Long heritage (since 1949) and small scale (468 students, 1:7 ratio, ~20/class) supporting individual attention
- Central Tokyo (Moto-Azabu) location with a strong community reputation
- Full fee transparency published for the upcoming school year
- Outreach scholarship programme offering partial/full financial aid
Trade-offs
- Ends at Grade 9 — no high school; families must arrange a separate high-school transition (Tokyo or overseas)
- No IB or Cambridge programme offered (no published authorisation)
- No published EAL/ESL (English-support) programme on public pages — may challenge non-native-English entrants, especially at older grades
- Small size means narrower extracurricular/specialist breadth than larger K–12 campuses
- No published university-placement data (structurally — the school is K–9)
Is It Right For You?
Best For
- ✓Families prioritising authentic English–Japanese bilingualism in the early/elementary/middle years
- ✓Families based long-term in central Tokyo seeking a small, community-oriented school
- ✓Children who will continue to a separate high school (international in Tokyo or abroad)
- ✓Parents valuing recognised international accreditation (WASC/CIS)
Not Ideal For
- ✕Families needing a single through-18 campus (no high school)
- ✕Families specifically seeking the IB Diploma or Cambridge A-Levels
- ✕Older non-native English speakers needing structured EAL support (none published)
- ✕Families seeking boarding (day school only)
Curriculum
English-medium curriculum (American/international) blended with a substantial Japanese Language and Japanese Social Studies programme, leveled by each student's Japanese proficiency. No IB or Cambridge authorisation. K–9 only.
Fees
Fully published for SY2026–27: tuition JPY 3,129,000/year (four quarterly instalments). One-time entrance: JPY 300,000 registration (non-refundable) + JPY 825,000 building maintenance. Annual add-ons: Education Enhancement JPY 200,000 + School Growth Fund JPY 200,000. Application fee JPY 30,000. Outreach scholarships available (amounts not published).
Admissions
JPY 30,000 non-refundable application fee. Japanese-programme placement is determined by each student's language background and proficiency. Exact kindergarten entry age is not published — verify with admissions.
Campus Life
Single central-Tokyo campus in Moto-Azabu (Minato-ku). Published features include ~20 students per class, a 1:7 student-teacher ratio, a 17,000-volume library, and Global & Service Learning. Day school only.
University Placement
School-reported · not independently verified
School-reported, unverified: the homepage cites '100% of graduates complete higher education.' Treat as a school-reported marketing claim — structurally limited because Nishimachi ends at Grade 9 (graduates proceed to separate high schools before any university placement).
Sources
Every verifiable fact carries a public source — verify it yourself.
- Nishimachi official — homepage (founding 1949, enrollment 468, K-9, bilingual) · 2026-06
- Nishimachi official — About / Guiding Statements (WASC + CIS, EARCOS, JCIS) · 2026-06
- Nishimachi official — Tuition & Fees (SY2026–27) · 2026-06
- Nishimachi official — Middle School 6–9 (Grade 9 top grade; graduates move to high schools elsewhere) · 2026-06
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