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Seisen International School

Japan, Tokyo

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· Reviewed by · B2C Marketing Manager

Independently researched by doris.
Not yet claimed by the school
The school at a glance
Instructs in English
Fees ¥2,300,000 - 2,470,000
Ages 3 - 18 years
Pupil numbers 700
Type Co-educational
Opened 1962
Bus Service Yes
Availability Not shared by this school
Academic offering
Curriculum IB (PYP), IB (MYP), IB (DP), Catholic Curriculum, Montessori Curriculum
Taught languages French, Japanese, Spanish
Typical class size 20
Strengths Sport, Performing Arts, Service and Sustainability
Clubs Academic and Intellectual, Arts and Creative, Lifestyle and Wellbeing
Stages Kindergarten, Elementary, Middle School, High School
Introduction

Seisen International School is a private Catholic school in Tokyo serving the international community, with a total K–12 population of about 700 students representing over 40 nationalities. Teaching is in English, and the school encourages students to speak English within the school. Seisen describes itself as an International Baccalaureate Continuum school, offering Montessori and the IB Primary Years Programme in Kindergarten, IB PYP in Elementary, IB MYP in Grades 6–10 and the IB Diploma Programme in High School. Facilities on the campus include science labs, a design tech room, music rooms, a drama room, library media centers, a chapel, a gymnasium and a field and tennis courts. Seisen also highlights service and leadership opportunities for students as part of school life.

www.seisen.com

1 Chome-12-15 Yoga, Setagaya City, Tokyo 158-0097, Japan

Vibes and Culture
The school has not added this information
The Essentials

Seisen International School has 700 pupils, typical class sizes of 20, instruction in English.

Location
Seisen International School is located at 1-chōme-12-15 Yōga, Setagaya City, Tokyo 158-0097, Japan. The campus sits in the Yoga district of Setagaya, a western Tokyo residential area. Yōga Station on the Tokyu Den-en-toshi Line provides rail access to central Tokyo, and a bus terminal nearby serves the school routes.

Stages
The school offers Kindergarten through Grade 12. Kindergarten serves ages 2-5; Elementary covers Grades 1-5; Middle School is Grades 6-8; High School is Grades 9-12.

Type
Seisen is a girls-only international Catholic school. It is sponsored by the Handmaids of the Sacred Heart of Jesus.

Pupil Nationality Mix
The Seisen community includes students from more than 60 nationalities. The school describes itself as international with no single nationality dominating the student body. Public sources do not publish a precise local versus international enrollment ratio.

Additional learning support
The Student Support program provides social and emotional, academic, language and health services, with a focus on addressing individual student needs within available resources. University advising is also offered as part of student support.

Country affiliation
No formal country affiliation.

Religious affiliation
Catholic.

School day structure
School start times vary by division. 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.

Bus service
Seisen operates a school bus service with multiple routes. The school lists bus as a service with fees in the Tuition & Fees schedule, and there are documented morning and afternoon bus timings (roughly 7:50–8:20 for the morning and 15:00–15:45 for the afternoon). The bus service has been described as a shared arrangement with partner schools in some sources.
Diving Deeper
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Fees

Annual tuition at Seisen International School ranges from JPY 2,300,000 to JPY 2,470,000 for 2026/27.

Application and Initial Fees
- Application Fee: JPY 20,000 (non-refundable).
- Registration Fee (one‑time): JPY 300,000 (non-refundable).
- Land and Building Development Fee (one‑time): JPY 500,000 (non-refundable; attendance of any portion of the school year makes this fee non‑refundable).

Annual Mandatory Fee
- Building Maintenance Fee (annual, non‑refundable): JPY 100,000.

Tuition Fees (annual and per installment where applicable)
- Kindergarten Half Day: Annual JPY 1,300,000. Per installment (if using two installments): JPY 650,000.
- Kindergarten Full Day: Annual JPY 2,200,000. Per installment: JPY 1,100,000.
- Elementary (Grades 1–5): Annual JPY 2,350,000. Per installment: JPY 1,175,000.
- Middle School (Grades 6–8): Annual JPY 2,370,000. Per installment: JPY 1,185,000.
- High School (Grades 9–12): Annual JPY 2,370,000. Per installment: JPY 1,185,000.

Additional / Program Fees
- ES iPad: Price varies; required purchases apply for new and returning students entering specified elementary grades (students in certain grades must purchase an iPad through the school).
- Grade 12 Graduation Fee: JPY 30,000.
- IB Examination Fee: JPY 20,000 per exam subject.

School Bus Fees
- One‑way (annual): JPY 310,000. Per installment (if using two installments): JPY 155,000.
- Both ways (annual): JPY 420,000. Per installment: JPY 210,000.
- School bus fees may be prorated on a quarterly basis if needed. Reservations should be made early.

School Trips and Field Studies
- Fees apply for major field studies that are part of the curriculum in Grades 5–12. Typical trip destinations and grade assignments are published for each year and relevant trip costs are charged in addition to tuition. (Examples of destinations by grade are maintained for each academic year.)

School Lunch
- On‑site school lunch is available through the contracted provider; families set up accounts directly with the lunch vendor and pay the lunch provider separately. Cost is charged by the lunch provider.

Accident Insurance
- The school maintains an accident insurance arrangement providing specified medical reimbursement and death/dismemberment limits for school‑insured students during the covered period. Details of coverage limits and effective dates are provided by the school.

Billing Schedule and Payment Terms
- First payment of tuition is payable by mid‑June. The second payment (when permitted) is due by January. Only the tuition fee and school bus fee may be paid in two installments; other fees are due as invoiced. Attendance for any portion of a quarter will require payment for the entire quarter. Invoices are mailed to families.

Refunds and Non‑Refundable Items
- Application Fee, Registration Fee, Land and Building Development Fee, and Building Maintenance Fee are non‑refundable. Attendance for any portion of a quarter requires payment for the full quarter. Bus fees may be prorated quarterly if appropriate. Parents remain responsible for fees due for any quarter in which the student attends for any portion.

Fee Payment Options and Bank Instructions
- All fees are payable by bank transfer. Cash and credit cards are not accepted for fee payments. Wire transfers should indicate the student's name and assigned invoice/account number to avoid unidentifiable remitters. All bank charges (domestic and international) are the responsibility of the payer and must be paid in addition to the school fees. The school provides its bank details for remittance to individual student account numbers on invoices.

Contact for Fee Questions
- A designated school business office contact is available for fee enquiries; families should use the published school contact channel for billing questions.
Academics

Seisen International School teaches IB (PYP), IB (MYP), IB (DP), Catholic Curriculum, Montessori Curriculum for students aged 3 to 18.

Curriculum
Seisen International School follows an IB continuum from Kindergarten through Grade 12, with Montessori-inspired Kindergarten, IB Primary Years Programme (PYP) for Grades 1–5, and IB Middle Years Programme (MYP) for Grades 6–10. In Elementary, the PYP uses transdisciplinary inquiry to address personal, local and global themes, supported by specialist subjects such as Art, Music, PE, ICT and Library, plus EAL and Learning Support; Japanese and Spanish are offered as language options. From Grades 6–10, the school delivers the MYP with eight concept-driven courses per year and includes a Grade 10 Personal Project. In Grades 11–12, students pursue the IB Diploma Programme (DP), choosing six subjects across groups at Higher or Standard Level, and completing Theory of Knowledge, the Extended Essay and CAS. The school emphasizes service and leadership within an international Catholic framework and is CIS and NEASC accredited; graduates attend universities worldwide.

Student Teacher Ratio
Grade levels are capped at around 50 students per grade, and total enrollment is about 700 students with around 99 teachers; this yields an approximate student–teacher ratio of 7:1.

Exam Results
IB Diploma Programme results are reported to families as part of the school's academic profile. The DP requires six subjects across groups at Higher or Standard Level, plus Theory of Knowledge, the Extended Essay and CAS. The Class of 2024 destinations show graduates entering universities in the USA, Canada, the UK, Europe and Asia, illustrating a global higher-education pathway. Seisen is accredited by CIS and NEASC.

Higher Education Progression
Graduates attend universities worldwide, including institutions in the USA, UK, Canada and Japan. The school provides college counseling and supports IB diploma candidates through the admissions process. DP outcomes and destinations are tracked to inform students and families about university progression. Historically, Seisen graduates have entered universities across North America, Europe and Asia.

Gifted and Talented
Gifted and talented students are supported within the IB framework through access to higher-level (HL) IB courses in the Diploma Programme and the Personal Project in the MYP; the school also runs targeted enrichment initiatives such as Women in Science and Technology to promote advanced study and leadership among high-ability students.
Wellbeing
The school has not added this information
Parent Experience
The school has not added this information
Facilities
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Extra-Curricular Activities
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Languages
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Reputation
The school has not added this information
Admissions

Admissions
Admissions Process
Step 1 — Inquiry and tour: Submit an inquiry to receive more information and to book a school tour. The Admissions Office will contact you to discuss your child, your family's background, and to coordinate a visit to the campus. English language ability is essential for at least one parent to communicate with the school and to understand written communications. The school uses English as the language of communication, instruction and inclusion.

Step 2 — Application completion: Complete the application as the formal first step in joining Seisen. After the application is submitted, the admissions process moves toward the review and selection stages defined by the school. All applications are considered on a case-by-case basis, with the child's ability to benefit from Seisen's academic programme as the prime criterion. The Head of School reserves the right to accept or reject an application based on space and alignment with the school's mission.

Step 3 — Review: The relevant principal will review the application and the admissions office will contact you with the outcome. This review considers how well the applicant fits the classroom environment, language support needs, and the school's capacity to meet the student's educational requirements. You may be requested to provide additional information or documentation to support the review.

Step 4 — Assessments and interviews: The admissions office will schedule the family interview with the kindergarten principal for applicants advancing to the next stage. For elementary, middle school and high school applicants, the admissions office will schedule assessment tests in mathematics and English. Interviews and tests are used to gauge fit with the curriculum and to verify information provided in the application.

Step 5 — Decision and further interviews: Based on the assessment results, the admissions office will book the family interview with the relevant principal. This step adds a formal discussion about the student's goals, language needs, and support requirements, if any. Final placement decisions are made after reviewing the assessment outcomes and interview notes.

Step 6 — Offer and enrollment package: Applicants eligible for a place will receive an enrollment package. Families should communicate their intent to accept or decline the offer within the package timelines. Space availability and the family's ability to support the School Mission are considered before a place is offered.

Step 7 — Enrollment completion: Enrollment is official upon receipt of the signed letter of endorsement, registration fee payment, parent/guardian commitment agreement, and, if applicable, the summer school agreement. The school will also provide next steps for onboarding and orientation.

Step 8 — Welcome and health information: After enrollment, a welcome email will be sent from the Magnus Health platform requesting student health records and any additional information for new students and parents. You will be guided on submitting health records and other onboarding requirements.

Scholarships
Scholarships
Seisen offers a Corporate Contribution Plan, a corporate scholarship program for foreign-based corporations responsible for expatriate employees' educational expenses. The program is described as a means for eligible corporate sponsors to contribute toward a student's education, and interested families should contact the Seisen Business Office for further information. There is no information indicating individual need-based or merit-based scholarships beyond this corporate program.

Waitlist
Waitlist/Pool
Seisen operates based on space availability. Priority acceptance is given to certain categories (siblings of current students, children of alumni, children of faculty and staff, returning students, and children from Catholic families), but acceptance is not automatic for these groups; the school still assesses fit with the curriculum and the family's support of the Mission. For returning students, acceptance depends on space, and an applicant may need to be placed on a waitlist until space opens up. If space is limited, a waitlist can be used while the school reviews capacity and considers new or returning applicants.
School Events
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