Seisen International School is a IB Primary Years Programme / IB Middle Years Programme / IB Diploma Programme / IB school in Tokyo, Japan. Founded in 1962. Annual tuition ranges from $15,410 to $16,549 USD.
Location & Getting There
NanaSays Scorecard
Key Details
Scholarships Available
Seisen offers a Corporate Contribution Plan — a corporate scholarship program for foreign-based corporations responsible for expatriate employees' educational expenses. Interested families should contact the Seisen Business Office. No individual need-based or merit-based scholarships are mentioned.
Key facts
About
Seisen International School is a private, all-girls day school located in Tokyo, Japan, authorized as an IB World School since 1986. The school offers the complete IB continuum including Primary Years Programme, Middle Years Programme, and Diploma Programme, with instruction in English and Japanese.
School data verified by NanaSays. Last updated: April 2026.
Why Families Choose
Girls-focused international education in Tokyo offering the full IB continuum from early childhood through diploma level, with instruction entirely in English.
Fees & Financials
| Grade / Year | Annual Fee |
|---|---|
| Kindergarten Full Day | JPY 2,200,000~$ 14,618 |
| Kindergarten Half Day | JPY 1,300,000~$ 8,638 |
| Elementary (Grades 1-5) | JPY 2,350,000~$ 15,615 |
| High School (Grades 9-12) | JPY 2,370,000~$ 15,748 |
| Middle School (Grades 6-8) | JPY 2,370,000~$ 15,748 |
Conversions to USD use exchange rates as of April 2026.
Original currency: ¥2,300,000 - 2,470,000. Application fee: $134.
Admissions Process
- 1Submit an inquiry and book a school tour. Step 2: Complete the formal application. Step 3: Relevant principal reviews the application. Step 4: Assessment tests in mathematics and English (Elementary, MS, HS) or family interview with kindergarten principal. Step 5: Family interview with relevant principal based on assessment results. Step 6: Eligible applicants receive an enrollment package with offer. Step 7: Enrollment completed upon receipt of signed letter of endorsement, registration fee payment, and commitment agreement. Step 8: Welcome email sent via Magnus Health platform requesting student health records.
Admissions Details
Seisen operates based on space availability. Priority acceptance is given to siblings of current students, children of alumni, children of faculty and staff, returning students, and children from Catholic families, though acceptance is not automatic. A waitlist may be used when space is limited while the school reviews capacity.
School Day
Start times are around 8:15–8:30 for most students and end times around 3:00–3:20, with Kindergarten schedules differing. The exact daily schedule is set by division and calendar.
Student Life
There are four houses named after Japanese mountains. The House System runs across the whole school (K–12) to foster a sense of belonging and leadership, with opportunities for student-led activities and inter-house events.
A designated school uniform is required for all students, with sportswear as needed. Uniforms are available for purchase from selected vendors. Items commonly include maroon and blue jumpers, a pleated skirt for some year groups, and a pinafore for Kindergarten to Grade 2.
A hot lunch program is available for students in Grades 1–12 provided by the school's contracted meal caterer. Families may also bring a packed lunch. A microwave is available in the cafeteria for reheating. Families set up accounts directly with the lunch vendor and pay the lunch provider separately.
Facilities & Programmes
Wellbeing & Safety
Mental wellbeing is addressed through social and emotional learning and counseling delivered by three School Counselors (one each for KG/Elementary, Middle School, and High School), working alongside the School Nurse and Learning Support Specialist. Goals include self-esteem building, effective stress management, and development of positive coping strategies, delivered through one-on-one support, small-group sessions, and classroom lessons.
Safeguarding is governed by a formal Student Safeguarding Policy with a designated Child Protection Officer and Assistant, mandatory reporting for suspected abuse by all staff, a safeguarding handbook, and clear reporting lines aligned to international child-protection standards.
Student Demographics
School Background
private
Catholic