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Shinagawa International School (SIS), founded in 2007, offers the full International Baccalaureate continuum: the Primary Years Programme (PYP), Middle Years Programme (MYP), and Diploma Programme (DP). The Seaside Campus serves Grades 1–3 and forms part of the school’s PYP pathway across SIS campuses in Tokyo. Located in the Shinagawa Seaside area, the campus is supported by practical student services, including an organised school bus system with multiple routes and on-site daycare for younger children. Student life includes a structured afterschool programme with activities spanning arts, sports, academic clubs and service initiatives, as well as residential trips and swimming classes that are part of the school programme. SIS also operates a four-week Summer School, which features hands-on projects across science, technology, engineering, arts and mathematics, along with weekly field trips. These programmes reflect the school’s emphasis on inquiry-based learning and real-world experiences within the IB framework.
4 Chome-8-8 Higashishinagawa, Shinagawa City, Tokyo 140-0002, Japan
Shinagawa International School - Seaside Campus has 450 pupils, typical class sizes of 20, instruction in English, Japanese.
Shinagawa International School (SIS) Seaside Campus is in Shinagawa Ward, Tokyo. The Seaside Campus address is 4-8-8 Higashishinagawa, Shinagawa, Tokyo 140-0002, and it sits within easy reach of nearby stations. The school operates a three-campus system to serve different age groups, with the Aoyoko Campus nearby in Minamishinagawa and the Samezu Campus also in Minamishinagawa. The Seaside Campus is about a 5-minute walk from Shinagawa Seaside Station and a 5-minute walk from Aomono-Yokocho Station.
SIS uses three campuses: Aoyoko Campus (Preschool – Kindergarten), Seaside Campus (Grade 1–3), and Samezu Campus (Grades 4–12). The Aoyoko Campus focuses on early years, the Seaside Campus houses the primary grades, and Samezu covers the middle and secondary years. The school's IB continuum covers the full span from Early Learning through Grade 12.
The school operates as an international co-educational day school with multiple campuses offering the IB continuum (PYP, MYP, DP). There are no boarding facilities listed.
The student body includes students from more than 40 different countries, with examples including the United States, Korea, the United Kingdom, Australia, China, Germany, Russia, Turkey, Peru, Taiwan, India, the Philippines, and Japan. A nationality representation cap of 25% is in place to maintain international diversity. Publicly published data does not break out the local versus international student ratio.
SIS publishes English as an Additional Language (EAL) support for students in Grades 1–10. The school emphasizes small-class learning and a 1:6 teacher-student ratio, which supports personalized instruction. There is no publicly listed dedicated SEN center on the official materials.
There is no country affiliation listed for the school; SIS presents itself as an IB World School with CIS membership.
SIS is secular and does not have a religious affiliation listed publicly.
Hours of instruction are published: Preschool to Kindergarten run 8:30 am–2:30 pm, and Grades 1–12 run 8:30 am–3:00 pm. The school offers English-taught classes with Japanese language options and EAL/Japanese language support as described in the FAQs.
A school bus service is offered with multiple routes in Tokyo. Bus details and routes are provided by the admissions team. For planning, there are published bus routes and contact points in the admissions information.
Annual tuition at Shinagawa International School - Seaside Campus ranges from JPY 2,450,000 to JPY 2,775,000 for 2026/27.
Shinagawa International School - Seaside Campus teaches IB (PYP) for students aged 6 to 9.
Shinagawa International School follows the IB continuum (PYP, MYP, DP) across three campuses: Aoyoko (Early Learning Center and PYP Early Years), Seaside Campus (Grade 1–3, PYP), and Samezu Campus (Grades 4–12, delivering PYP, MYP and DP). In the Primary Years Programme (PYP), from age 3 to Grade 5, the curriculum uses inquiry-based units organized around six transdisciplinary themes, with English as the language of instruction and language support including EAL and Japanese. In the Middle Years Programme (MYP), Grades 6–10, students study across eight subject groups, with interdisciplinary learning and Approaches to Learning, and they undertake a Personal Project; English and Japanese are supported at appropriate proficiency levels. The Diploma Programme (DP) is for Grades 11–12 (ages 16–19) and features courses across subject groups, plus the DP core—Theory of Knowledge, the Extended Essay, and Creativity, Activity, Service—with college counseling. DP language options include English A and Japanese A; Japanese B and Japanese ab initio are available in Language Acquisition, and Pamoja online DP expands language offerings. English is the primary language of instruction with language development in English and Japanese across PYP/MYP/DP, and the school provides EAL and Japanese language support services.
Shinagawa International School supports social-emotional learning through Learning Support that includes counseling, small class sizes, and Student Success Plans, with English as an Additional Language (EAL) and targeted math support contributing to a supportive, inclusive environment.
SEN provision includes identifying additional needs during the application process or through classroom observations; Learning Support covers learning difficulties and EAL, with formal IEPs for formally assessed students and a Student Success Plan for others; small class sizes, counseling, and math support are provided, and the school does not publicly disclose information regarding whether it is a specialist SEN institution.
The EAL program helps students access the mainstream curriculum through small-group instruction and curriculum modifications, with both push-in and pull-out sessions; English proficiency is assessed using WIDA standards during the interview process, and an EAL coordinator and homeroom teacher oversee ongoing support and regular assessments.
Counseling is provided as part of Learning Support to support students' mental wellbeing.
Shinagawa International School is committed to safeguarding and promoting the well-being of children, with safeguarding emphasized in staff recruitment practices (police background checks for new employees) and related policies; fire, earthquake, and lockdown drills are conducted regularly.
Context: Shinagawa International School Seaside Campus serves Grades 1–3 and offers the International Baccalaureate Primary Years Programme. The language of instruction is English for most subjects, with Japanese language classes and English as an Additional Language (EAL) support available. The Seaside Campus is part of a three-campus system (Aoyoko Campus for Preschool–Kindergarten, Seaside Campus for Grades 1–3, and Samezu Campus for Grades 4–12). Admission steps are as follows:
1. Inquiry: Begin by asking questions about facilities, the IB curriculum, and the school's teaching philosophy. An Admissions Officer can respond with information about programs and arrangements, and guidance on next steps. While a school visit is helpful for understanding the environment, it is not mandatory at this stage.
2. School Visit: Arrange a visit to the school through the admissions page or the School Visit Reservation form. A visit is highly recommended to gain a comprehensive understanding of daily life, classrooms, and programs, but it is not required.
3. Application Submission: Complete and submit the application form along with the application fee of 40,000 JPY. Applications are accepted year-round with no fixed deadline. The enrollment process also requires submitting supporting documents as part of the application.
4. Interview and Assessment: After submission, applicants may be invited to participate in an interview and assessment. Students in Grade 1 and above will take a MAP test to evaluate English, reading, and mathematics levels. The admissions team reviews assessment results to inform decisions.
5. Admission Decision and Enrolment: Admissions decisions are communicated within a few weeks after the assessment. Acceptance letters and enrollment invoices are sent to successful applicants. Enrolment requires completing the enrollment form and paying the school fees; if not admitted, feedback is provided to help applicants understand the decision. Language of instruction is English for most subjects, with Japanese language classes and EAL support available.
Note: Applications for the Seaside Campus follow the same overall process described above, with placement aligned to age and grade eligibility. The Seaside Campus specifically accommodates early grades (Grade 1–3) at its location in Shinagawa.
Scholarships and discounts: The published materials describe sibling-based discounts on tuition. A 10% discount applies to the second and all additional siblings. A 30% discount is available for the third child, but only for current students. No other scholarships are described in the published admissions materials; there is no detailed information about need-based or merit-based scholarships on the official pages.
Waitlist/pool: When a class is at full capacity, applicants may be placed in a waiting pool. The waiting pool is not ranked. If spaces become available, the Committee will reconsider candidates based on the balance of the class in terms of gender, nationality, English proficiency, siblings, and other factors. The waiting pool is valid for two years. This is reflected in the school's listing indicating a waiting list option.