Shinagawa International School

What Shinagawa International School does

Shinagawa International School (SIS) is a Tokyo-based non-profit international school operating three campuses in the Shinagawa district. Founded in 2007 in Shibuya and relocated to Shinagawa Seaside in June 2018, the school delivers the full International Baccalaureate continuum — Primary Years Programme (PYP), Middle Years Programme (MYP), and Diploma Programme (DP) — to students aged 3 through 18. As of September 2025, SIS enrolls over 450 students from 40+ nationalities, with a 1:6 teacher-to-student ratio and class sizes capped at 22-24 students. The school holds IB World School, CIS, and WASC accreditations and is a member of the Tokyo Association of International Preschools (TAIP).

SIS generates revenue primarily through tiered annual tuition fees (¥2,575,000 to ¥2,900,000 per student depending on grade level), supplemented by recurring maintenance, supply, EAL, and learning support fees. One-time application (¥40,000) and enrollment (¥1,000,000) fees provide upfront capital per new admit. Ancillary services — including a four-week summer school, eight bus routes across greater Tokyo, daycare, school lunches, and over 70 after-school programs — produce incremental recurring and usage-based revenue. The go-to-market motion is direct-to-consumer: families apply year-round through the OpenApply platform, complete campus visits, MAP testing, and admissions interviews, with rolling admissions plus aligned April intake. The customer base consists of international and expatriate families seeking internationally portable credentials and multicultural exposure, capped at a 25% maximum share for any single nationality to preserve diversity.

Name

Shinagawa International School

Legal name

Shinagawa International School

Website

https://sistokyo.jp

Company type

Private

Founded year

2007

Operating status

Operating

Headcount range

11–50 employees

Short description

Shinagawa International School is a non-profit Tokyo international school operating three Shinagawa-area campuses and delivering the full IB Continuum (PYP, MYP, DP) to over 450 students aged 3-18 from 40+ nationalities, funded primarily through tiered annual tuition and one-time enrollment fees.

Ownership category

akta.pro rank

Product category

International K-12 Education

NAICS

Elementary and Secondary Schools (61111)

SIC

Services-Educational Services (8200)

akta.pro industry

PRIMARYEDAJABAG

International/Global Curriculum Schools (IB, Cambridge, etc.)

Education/K–12 / Primary & Secondary Education/Private & Independent K–12 Schools

SECONDARYEDACADAK

International Curriculum Early Learning Academies (e.g., IB Early Years)

Education/Early Childhood Education/Early Learning Academies & Montessori/Reggio/Steiner Programs

SECONDARYEDAIAHAC

Overseas Summer School Programs (Secondary)

Education/International Education & Study Abroad/Overseas Secondary School Programs (Boarding, Exchange, Summer)

Keywords

• International education
• IB curriculum
• Early childhood education
• Primary education
• Secondary education

Headquarters

HQ city

Tokyo, Tokyo-to

HQ country

Japan

HQ region

Asia

Offices3 records

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Marketing or Sales, Technology or R&D, Supply Chain

Revenue model

1. Tuition Fees: Annual tuition charged per student across three terms. Higher fees for secondary grades (6-12) and DP (11-12). Includes structured pricing by grade level from Preschool to Grade 12.
2. Application and Enrollment Fees: One-time non-refundable application fee (40,000 JPY) and enrollment fee (1,000,000 JPY) charged upon admission.
3. Maintenance and Supply Fees: Annual non-refundable maintenance fee (250,000 JPY) and supply fee (50,000 JPY) covering field trips, textbooks, and stationery.
4. Additional Support Services: EAL Fee (200,000 JPY annual), Learning Support Fee (500,000 JPY annual), and Daycare Service (2,000 JPY/hour).
5. Summer School Program: Four-week summer school program (June 29 - July 24) charging 80,000 JPY/week for SIS students and 100,000 JPY/week for external students.
6. School Bus Service: Transportation service with 8 bus routes across Tokyo area, weekly bus fee of 20,000 JPY.
7. School Lunches: Optional school lunch program through Kiwi's Kitchen and Tamagoya, with regular size at 650 yen and large at 850 yen.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels7 records

Core offering

Shinagawa International School is a private, non-profit international school in Tokyo operating the full IB Continuum (Primary Years, Middle Years, and Diploma Programmes) for students aged 3 through Grade 12. It delivers inquiry-based instruction across three Shinagawa-area campuses supplemented by summer school, over 70 after-school programs, school bus transportation, daycare, English-as-an-Additional-Language support, and learning support services. Revenue is generated primarily through tuition, application/enrollment, and ancillary program fees.

Product overview

Shinagawa International School offers a unified IB Continuum educational program spanning Early Learning (ages 3-5) through Secondary (Grades 6-12), implementing the Primary Years Programme (PYP), Middle Years Programme (MYP), and Diploma Programme (DP). The school operates three campuses across Tokyo (Aoyoko, Seaside, and Samezu) and supplements its core academic programs with enrichment offerings including Summer School, over 70 After School Programs (ASPs), swimming lessons, school bus services, daycare, and learning support including EAL. The product portfolio forms an integrated educational experience from early childhood through university preparation, with the recent 2024-25 launch of the DP marking the full IB Continuum implementation. The school serves over 450 students from 40+ nationalities with a 1:6 teacher-to-student ratio and a maximum of 24 students per class.

Differentiator

Problem solved

Functional benefit

Products and services

• Early Learning Center (ELC) Early childhood program for children aged 3-5 at the Aoyoko Campus implementing the IB Primary Years Programme Early Years curriculum with a play-based, inquiry-led approach fostering language, motor, social, and academic development.
• Primary Years Programme (PYP)
• Middle Years Programme (MYP)
• Diploma Programme (DP)
• Summer School
• After School Programs (ASPs)
• School Bus Service
• Daycare Service
• English as an Additional Language (EAL) Program
• Learning Support
• Residential Trips
• College Counseling Program

Quantifiable outcome

• First Grade 12 graduating class in 2026

Named customers2 records

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration7 records

Feature5 records

Partnerships

Four partnerships are on record, tiered minor.

• Kiwi's KitchenminorOthersSchool lunch provider offering 4 different main dishes daily including one vegetarian option. Available in regular (650 yen) and large (850 yen) sizes.
• TamagoyaminorOthersSchool lunch provider partner offering additional meal options for students. Orders placed weekly and monthly in advance.
• Konami Sports ClubminorStrategic or Co-development PartnerSwimming lessons provided at nearby Konami Sports Club Swimming Pool for all PYP students (PreS to Grade 5). Weekly 45-minute sessions with qualified Konami coaches alongside SIS staff. Students participate in Konami swimming level certification program.
• Japanese Red Cross SocietyminorOthersCollaboration for blood donation drives organized at the school to support community health initiatives.

Scale indicators7 records

Recent moves7 records

Expansion highlights5 records

Direct peers

• American School in Japan: ASIJ is Tokyo's largest and oldest international school (founded 1902), offering an IB curriculum from elementary through high school. Directly comparable on target market (Tokyo expatriate families), IB offerings, and premium tuition model — but at significantly greater scale and longer track record.
• Yokohama International School: YIS is an IB Continuum school serving Greater Tokyo with a similar tuition band and three IB programmes, making it a direct functional peer on curriculum and pricing — located slightly outside Tokyo in Yokohama.
• Tokyo International School: TIS is a smaller, relatively young Tokyo international school offering IB programmes with a strong focus on inquiry-based learning. Closely comparable to SIS on scale, age, IB continuum offerings, and target expatriate market — making it the most directly competitive peer.
• Nishimachi International School: Nishimachi is a long-established Tokyo international school with strong Japanese-English bilingual emphasis. Comparable on premium positioning and Tokyo expatriate target market, though its curriculum mix is more bilingual-focused than pure IB like SIS.
• Aoba-Japan International School: Aoba operates IB programmes across multiple campuses serving Tokyo's international community. Comparable on IB curriculum, multi-campus structure, and bilingual philosophy, with significantly larger enrollment than SIS.
• Saint Maur International School: Saint Maur is a Yokohama-based IB Continuum school serving Greater Tokyo expatriate families. Comparable on full IB continuum, Catholic tradition, multicultural student body, and premium tuition, competing for the same expat family segment.
• International School of the Sacred Heart: Sacred Heart is a long-established Tokyo international school offering IB programmes to a multinational student body. Comparable on premium Catholic-tradition positioning, IB offerings, and Tokyo expatriate market focus, with longer operating history than SIS.
• Canadian International School in Tokyo: Canadian International School serves Tokyo expatriate families with English-language IB programmes. Comparable on premium tuition, IB curriculum offerings, and target market, though smaller and newer than SIS.
• British School in Tokyo: BST serves the Tokyo expatriate market with English-national-curriculum and IB programmes across multiple campuses. Comparable on premium positioning, IB continuum, and target expatriate families, though its curriculum branding is more British than international.

Emerging players

• K. International School Tokyo: KIST is a smaller Tokyo international school with IB PYP and MYP programmes (no DP yet) targeting similar expatriate families. Highly comparable on size and curriculum philosophy, though still building its secondary offering while SIS now operates the full IB continuum.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xtwitter.com/ShinagawaIS
• Facebookfacebook.com/shinagawa.is
• Instagraminstagram.com/shinagawa.is
• LinkedInlinkedin.com/company/shinagawa-international-school

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Shinagawa International School