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St. Mary's International School

Tokyo, Japan

  • DP
  • IB World School

About the school

St. Mary's International School is a private Catholic day school for boys in Setagaya, Tokyo, founded in 1954 by the Brothers of Christian Instruction. It teaches in English from the RP (kindergarten) year to Grade 12 and has offered the IB Diploma Programme since 1979.

Key facts

Founded
1954
IB Diploma since
1979
Ages
5-18
Status
Private
Teaching languages
English
Students
Boys
Boarding
No, day school

Programmes

  • DP
    Diploma Programmeages 16 to 19, authorised in 1979

Accreditations: WASC, CIS

Tuition fees

JP¥2,860,000 – JP¥3,050,000 per year

Annual fees published by the school (2026-27), from the youngest to the oldest year group. Registration, transport and meals may be extra. Source

Location

1-6-19 Seta, Setagaya-ku, Tokyo 158-0095, Japon

St. Mary's International School
IB World School
Ages 5-18
1-6-19 Seta, Setagaya-ku, Tokyo 158-0095, Japon

Data checked in November 2026 against the International Baccalaureate directory and the school’s own website. Figures change: confirm with the school before deciding.

Sources: ibo.org · smis.ac.jp · en.wikipedia.org

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