Horizon Japan International School vs Shinagawa International School - Samezu Campus

	H Horizon Japan International School Tokyo, Japan	S Shinagawa International School - Samezu Campus Tokyo, Japan
Snapshot	Snapshot
Fees / year	Fees / year ¥2,690,000 - 3,140,000	Fees / year ¥2,575,000 - 2,900,000
Age range	Age range 3 - 18 years	Age range 3 - 18 years
Type	Type Co-educational	Type Co-educational
Curriculum	Curriculum IB (PYP), IB (MYP), IB (DP)	Curriculum IB (PYP), IB (MYP), IB (DP)
Pupils	Pupils 530	Pupils 450
Typical class size	Typical class size 20	Typical class size 20
Instruction language	Instruction language English	Instruction language English
Opened	Opened 2003	Opened 2007
Bus service	Bus service Yes	Bus service Yes
Essentials	Essentials
Location	Location The Horizon Japan International School is located at 1-24 Ono-cho, Kanagawa-ku, Yokohama, Kanagawa 221-0055, Japan. The campus sits along Yokohama's portside waterfront in central Yokohama. It is accessible from Yokohama Station via multiple JR lines (Keihin-Tohoku/Negishi, Tokaido, Yokosuka, Shonan-Shinjuku) and private rail lines (Tokyu Toyoko Minatomirai, Keikyu Main Line, Sotetsu, and the Yokohama Municipal Blue Line).	Location Shinagawa International School has three campuses in Shinagawa Ward, Tokyo: Aoyoko Campus (Preschool–Kindergarten), Seaside Campus (Primary), and Samezu Campus (Secondary). The Aoyoko Campus is in Minamishinagawa; Seaside sits near Shinagawa Seaside Station, and Samezu is also located in Minamishinagawa. The campuses are accessible by multiple rail lines: Aoyoko is about 5 minutes from Aomono-Yokocho, 7 minutes from Oimachi, and 15 minutes from Shinagawa Seaside; Seaside is about 5 minutes from Shinagawa Seaside and Aomono-Yokocho, and 15 minutes from Oimachi; Samezu is about 7 minutes from Shinagawa Seaside, 3 minutes from Aomono-Yokocho, and 15 minutes from Oimachi.
Stages	Stages HJIS offers the full International Baccalaureate continuum from early years through high school. The Early Years Programme (EYP) serves ages 3–5, followed by the Primary Years Programme (PYP), Middle Years Programme (MYP), and the Diploma Programme (DP) in the upper grades.	Stages The school offers an IB continuum: Early Learning Center (ELC) for ages 3–5 at the Aoyoko Campus; Primary Years Programme across Seaside (Grade 1–3) and Samezu (Grade 4–5); Middle Years Programme (MYP) for Grades 6–10; and Diploma Programme (DP) for Grades 11–12.
School type	School type HJIS is a co-educational international day school. It operates as a day school rather than a boarding institution.	School type Co-educational day school with no boarding facilities.
Pupil nationality mix	Pupil nationality mix The student body represents over 37 nationalities. The school has more than 530 students (Preschool to Grade 12) and 22 nationalities represented among the faculty. The most represented nationality among students is not publicly disclosed.	Pupil nationality mix Students come from more than 40 countries. The most common nationalities are not publicly disclosed, and a detailed local-to-international ratio is not published.
Additional learning support	Additional learning support The school provides English as an Additional Language (EAL) support for non-native speakers from Early Years to the Diploma Programme. A Student Support & Guidance framework is in place to support learners, alongside related SEN provisions.	Additional learning support Learning support includes English as an Additional Language (EAL) and other supports. EAL is delivered in small groups with push‑in and pull‑out sessions, with English proficiency assessed using WIDA standards. For formally assessed students, an Individual Educational Plan (IEP) may be created; for others, a Student Success Plan is used to support inclusion in mainstream classes.
Country affiliation	Country affiliation No formal country affiliation is stated. The school is located in Yokohama, Japan.	Country affiliation No formal country affiliation is listed.
Religious affiliation	Religious affiliation No religious affiliation is stated; the school welcomes students from diverse religious backgrounds.	Religious affiliation No religious affiliation is listed.
School day structure	School day structure Lunch is offered through a school lunch program (students may also bring lunch). After-school Daycare runs from 3:30 to 6:00 PM on regular school days. The School Office hours are 8:00 AM–5:00 PM on weekdays.	School day structure Preschool–Kindergarten: instructional hours from 8:30 am to 2:30 pm; Grades 1–12: 8:30 am to 3:00 pm.
Bus service details	Bus service details Private bus transportation is provided by a contracted bus company for an additional fee. The fleet serves a large region including most major areas of Yokohama and surrounding neighborhoods. Bus routes include Kohoku, Hiyoshi, Yokohama, and Kawasaki, with annual revisions; safety rules and a timetable are published and waitlists may apply when buses reach capacity.	Bus service details A safe school bus service operates, primarily for preschool and primary students with limited availability for secondary students. Buses have seat belts, GPS tracking, and attendants. There are eight routes (School Bus 1–8) serving various areas; routes and times may adjust based on demand. Parents can register by contacting the school.
Fees	Fees
Fee details	Fee details Application and one-time fees - Application Fee (one-time, non-refundable): JPY 30,000. - Registration Fee (one-time, non-refundable; payable when a place is offered and accepted): JPY 300,000. - Building Fund (one-time, non-refundable; payable when a place is offered and accepted): JPY 600,000. Tuition fees by year group (term amounts and full academic year totals) - Early Years (Preschool / Pre-Kinder / Kindergarten): 1st term JPY 976,000; 2nd term JPY 732,000; 3rd term JPY 732,000. Total for the academic year: JPY 2,440,000. - Primary School (Grades 1–5): 1st term JPY 1,116,000; 2nd term JPY 837,000; 3rd term JPY 837,000. Total for the academic year: JPY 2,790,000. - Secondary School (Grades 6–12): 1st term JPY 1,156,000; 2nd term JPY 867,000; 3rd term JPY 867,000. Total for the academic year: JPY 2,890,000. Maintenance fee - Maintenance Fee (one-time contribution, non-refundable): paid across the three term payments as JPY 100,000 (1st term), JPY 75,000 (2nd term), JPY 75,000 (3rd term); total JPY 250,000. Additional fees and other recurring costs - English as an Additional Language (EAL) Support Fee (if required): 1st term JPY 200,000; 2nd term JPY 150,000; 3rd term JPY 150,000. Total when required: JPY 500,000. - Daycare service (if used; available to students up to Kindergarten): 1st term JPY 300,000; 2nd term JPY 225,000; 3rd term JPY 225,000. Total: JPY 750,000. Day-use daycare is charged at JPY 1,000 per 30 minutes. - School bus (if utilized): Round-trip – 1st term JPY 120,000; 2nd term JPY 90,000; 3rd term JPY 90,000; total JPY 300,000. One-way – 1st term JPY 85,000; 2nd term JPY 65,000; 3rd term JPY 65,000; total JPY 215,000. One-time school bus fee per ride: JPY 2,500. - IB Programme Fee (for Grade 11 and 12 candidates): annual fee JPY 150,000. - Annual PTA Fee: JPY 5,000. - Expenses not included in tuition (paid separately by parents): PE uniforms, classroom supplies, cafeteria/lunch services, after-school activities (ASPs), activity-related travel and expedition/overnight trip costs, technology devices (iPad for Grades 1–4; MacBook for Grades 5–12) and any optional extracurricular fees. - Sibling discounts: 20% discount on tuition for the second child; 30% discount on tuition for the third child. Billing schedule and payment terms - Standard term due dates: 1st term payment due June 5; 2nd term payment due October 5; 3rd term payment due February 20. - Tuition may be paid in three scheduled installments aligned to the term due dates. - Payments for admissions-related one-time fees and the first-term tuition must be paid at admissions (new-student invoice payment is required within one week of admission notification). - The school uses an automatic withdrawal system for tuition and other school-related payments; payments are processed via bank arrangements and are automatically withdrawn on the scheduled dates (June 5, October 5, February 20). Admissions, Building Fund, Registration Fees and the first term school fees should be made by bank transfer during the admissions process. The school does not accept cash or credit card payments for tuition and fees. Note: the application fee can be paid by credit card via the online admissions portal or by bank transfer. Boarding fees - Boarding is not applicable; no boarding fees are listed. Uniforms and related costs - The school requires a uniform; uniform items (including PE uniform) are additional costs paid by parents and are ordered through the school's uniform ordering process. PE uniform and other uniform items are not included in tuition and are charged separately. Refund and withdrawal information - Application, Registration and Building Fund fees are one-time and non-refundable. - Tuition and maintenance fees are non-refundable. The school will not reimburse payments for a current term because of a student's absences, suspension or expulsion. In the event of natural disasters or adverse weather conditions resulting in school cancellations, no refunds will be provided for affected days. Tuition and fees are not transferable to another student. - Withdrawal procedure requires completion before the last day of the next term's tuition payment deadline; official transcripts and records are released only after all financial obligations are met. Late enrollment requires payment for the entire term even if attendance is for only part of the term. Fee payment instructions and bank information (methods) - Accepted payment method for ongoing tuition and term payments: automatic bank withdrawal / bank transfer. Parents are responsible for any bank transaction fees and charges. - Admissions, Building Fund and Registration Fees and the first term school fees should be paid by bank transfer during the admissions process; subsequent scheduled payments are processed by automatic withdrawal from the bank account arranged by the family. - The school does not accept cash or credit card for tuition and fees; the application fee may be paid by credit card through the online admissions portal or by bank transfer.	Fee details Application and Admission Fees - Application fee: JPY 40,000 (one‑time, non‑refundable; payable on submission of each student's application). - Enrollment fee (registration): JPY 1,000,000 (one‑time, non‑refundable; payable within one week of confirmation of admission). Tuition — amounts and term schedule (three installments per school year) Tuition is charged per academic year and payable in three installments (Term 1, Term 2, Term 3). The following shows each term amount and the annual total for the 2025–2026 school year: - Preschool – Kindergarten: Term 1 JPY 875,000; Term 2 JPY 675,000; Term 3 JPY 675,000. Annual total JPY 2,225,000. - Grades 1–5: Term 1 JPY 850,000; Term 2 JPY 750,000; Term 3 JPY 750,000. Annual total JPY 2,350,000. - Secondary (Grades 6–10): Term 1 JPY 950,000; Term 2 JPY 750,000; Term 3 JPY 750,000. Annual total JPY 2,450,000. - Secondary (Grades 11–12): Term 1 JPY 950,000; Term 2 JPY 800,000; Term 3 JPY 800,000. Annual total JPY 2,550,000. Additional recurring educational fees shown per term (where applicable): - EAL fee (if required): Term 1 JPY 200,000; Term 2 JPY 150,000; Term 3 JPY 150,000. Annual total JPY 500,000. - Daycare service (charged at JPY 2,000/hour): Term 1 JPY 275,000; Term 2 JPY 200,000; Term 3 JPY 275,000. Annual total JPY 750,000 (dependent on hours used). (The school states that tuition is charged per year and is payable in three installments.) Maintenance, supply and support fees - Maintenance fee: JPY 250,000 per student per year (annual, non‑refundable). - Supply fee: Charged to cover small field trips, Japanese textbooks, class novels and some stationery items; amount depends on grade/use and is charged separately. - Learning support fee (if required): JPY 500,000 per year, payable in three installments. Additional and optional costs - Lunches: not included in tuition; charged separately. - Uniforms: compulsory for all grades; cost varies by items ordered. - PTA annual fee: JPY 6,000. - School excursions / field trips and non‑curricular residential/day trips: charged as required (examples of single–event charges range from JPY 100 to JPY 1,500 depending on the activity). - Some exam fees, some sports events/tournaments, some extracurricular activities/ASPs, and swimming: may be charged separately. Sibling discounts - A 20% discount on the second child's tuition is available for families with children enrolled before the 2025–2026 school year. For parents enrolling after the 2025–2026 school year, a 10% discount is available on the tuition fees for the second and any additional siblings. Billing schedule and payment terms - Tuition schedule: the annual tuition is split into three instalments (Term 1, Term 2, Term 3) and billed accordingly. - Application fee: due on submission of the application. Enrollment fee: payable within one week from confirmation of admission. Maintenance and other annual fees are charged as stated. - Late enrolment: students joining after the start of the school year are charged by academic term; attendance for any portion of a term requires payment for the full term. - Late payment: a 2% fee is added to late tuition payments; accounts in arrears by more than one month may result in suspension of the student until the balance is cleared. - Withdrawal notice: parents must provide not less than one complete term's prior written notice; otherwise one complete term's fees are payable in lieu of notice. Refund information - All school fees are non‑refundable. One‑time payments and first‑term tuition are non‑refundable. If travel to Japan is prevented by unavoidable circumstances such as government visa restrictions or entry regulations, tuition payments may be carried forward once. Fee payment options and contact for payment arrangements - All fees are to be remitted in Japanese yen (JPY). - The school accepts bank transfers for donations and publishes bank details for remittance; the accounting contact is accounting@sistokyo.jp for payment enquiries and arrangements. Use of bank transfer for payments and invoicing is in practice for the school's financial transactions. Notes - Tuition and fees shown above are fixed for the August 2025 to June 2026 school year and are reviewed annually. Any changes for the next school year are announced by the end of May.
Diving deeper	Diving deeper
Boarding arrangements	Boarding arrangements Boarding is not offered. The school operates as a day school. For families needing after-school care, Horizon Daycare provides a supervised after-school program for children aged 3 to 6 from 3:30 to 6:00 PM on regular school days. Daycare is also available during midterm holidays and summer school days, with sign-up allowed up to 24 hours in advance.	Boarding arrangements —
Uniform requirement	Uniform requirement Uniform dress is required for all students from Monday to Friday; uniforms must be neat and clean and students are expected to present a formal appearance. There are exceptions for special events, and a Dress Code Policy governs attire; uniforms can be ordered through the online ordering link.	Uniform requirement Uniform is compulsory for all grades. Uniforms can be ordered throughout the year, and the overall cost depends on the number of items ordered. The uniform policy promotes unity within the school.
Food options	Food options Nutritious meals are prepared by Cezar's Kitchen, designed to meet daily nutritional needs under the supervision of nutritionists. Vegetarian options are regularly updated, and meals are prepared with appropriate utensils; students may opt for the hot lunch program or bring lunch from home, with microwaves available in the cafeteria.	Food options An optional lunch service is available, offering a variety of meals. Dietary options are not specified on the site.
House system	House system HJIS uses a house system as part of student life. House-based activities and house competitions are included in the extracurricular program.	House system —
Governance and ownership	Governance and ownership HJIS is a not-for-profit educational institution governed by a Board of Directors. It holds Gakko Hojin (educational corporation) status granted by Kanagawa Prefecture. The school operates within a Horizon-branded network of international schools in Japan, as shown by sister campuses such as Horizon Sendai.	Governance and ownership Shinagawa International School operates as a non-profit organization governed by a School Board. The Board defines the school's Vision, Mission, and policies and oversees strategic planning, financial management, and risk management, as well as the recruitment and performance assessment of the Head of School. The school is a member of the Council of International Schools (CIS) and is currently undergoing accreditation.
Academics	Academics
Curriculum details	Curriculum details HJIS offers an IB Continuum from Early Years through Grade 12, including the Early Years Programme (EYP), Primary Years Programme (PYP), Middle Years Programme (MYP), and the IB Diploma Programme (DP). Instruction is in English, with English as an Additional Language (EAL) support to ensure full access to the curriculum. The Diploma Programme follows the IB framework with six subject groups and a DP core to prepare students for higher education. The school holds accreditations as an IB World School and is accredited by CIS, WASC, and ECIS. The program emphasizes inquiry-based learning and global citizenship across all grade levels.	Curriculum details The Samezu Campus serves students from Grade 4 through Grade 12, delivering the IB continuum: Primary Years Programme (PYP) in Grades 4–5, Middle Years Programme (MYP) in Grades 6–10, and the Diploma Programme (DP) in Grades 11–12. The Primary Years Programme (PYP) uses a transdisciplinary, inquiry-based approach organized around six themes: Who We Are, Where We Are In Place And Time, How We Express Ourselves, How The World Works, How We Organize Ourselves, and Sharing the Planet, with knowledge, concepts, skills, and dispositions developed through units of inquiry. In the Middle Years Programme (Grades 6–10), language and literature are taught in English and Japanese, language acquisition in Japanese, and the program covers Mathematics, Individuals and Societies, Sciences, PHE, Design, and Arts (Visual Arts and Music), with an emphasis on Approaches to Learning and the Personal Project. The Diploma Programme (Grades 11–12, commencing in 2024–25) offers Group 1 English A and Japanese A; Group 2 Japanese B and ab initio; Group 3 Business Management and Environmental Systems and Societies; Group 4 Chemistry, Biology, Physics, Computer Science, and Environmental Systems and Societies; Group 5 Mathematics (Applications and Interpretation SL or Analysis and Approaches HL) and includes the DP core—Theory of Knowledge (TOK), the Extended Essay (EE), and Creativity, Activity, Service (CAS)—with college counseling support. The school provides English-language instruction with EAL and Japanese language support, and campus groupings are Aoyoko Campus (Preschool–Kindergarten), Seaside Campus (Grade 1–3), and Samezu Campus (Grade 4–12).
Student teacher ratio	Student teacher ratio —	Student teacher ratio —
Exam results	Exam results —	Exam results —
Higher education progression	Higher education progression —	Higher education progression —
Gifted and talented	Gifted and talented —	Gifted and talented —
Academic calendar	Academic calendar —	Academic calendar —
Wellbeing & support	Wellbeing & support
Social & emotional learning	Social & emotional learning HJIS prioritizes student social and emotional wellbeing as a core part of its safety and learning culture. The Student Support & Guidance program combines academic assistance, language learning, and career preparation into one seamless framework. The IB continuum and guiding statements promote global citizenship, high quality learning, and a collaborative community, which underpin SEL. The school offers more than 60 after-school clubs to support social development and peer connections. Digital Citizenship and Global Citizenship are highlighted as core values in the guiding statements, reinforcing responsible, empathetic participation in school and beyond.	Social & emotional learning Shinagawa International School's guiding statements state that it cultivates a multicultural community that supports academic, social, and personal success, and it fosters a respectful, inclusive environment with a 1:6 teacher–student ratio.
Special educational needs (SEN)	Special educational needs (SEN) An ILP (Individualized Learning Plan) is used during admissions to tailor support for students with identified needs. EAL (English as an Additional Language) support is provided for non-native speakers from Early Years to the Diploma Programme. Placement assessments determine whether EAL or other specialized assistance is required. Horizon is an IB World School (PYP, MYP, DP), with SEN support described as integrated within the IB framework rather than as a separate SEN department.	Special educational needs (SEN) SIS Samezu Campus (Grade 4–12) provides Learning Support for students with additional needs, including EAL and behavior management, with an Individual Educational Plan (IEP) or a Student Success Plan as appropriate.
English as an additional language	English as an additional language HJIS provides tailored English support for non-native speakers from Early Years to the Diploma Programme. Lessons focus on reading, writing, speaking, and listening skills and are integrated into the IB curriculum. During admissions, a WIDA test is used to assess EAL needs and determine the level of support required.	English as an additional language The EAL program uses small-group instruction and curriculum modifications, offering both 'push in' and 'pull out' sessions; English proficiency is assessed using WIDA standards, and enrollment and ongoing support are coordinated by the EAL coordinator and homeroom teacher.
Mental wellbeing	Mental wellbeing Safety Protocols state that the safety, health, and emotional wellbeing of students, staff, and visitors are top priorities. The protocols outline emergency communications and a culture of safety and trust. During incidents, families are updated via emails, website posts, social media, and phone where available, and no child is dismissed from school without a parent or approved designee with photo ID.	Mental wellbeing Mental wellbeing is supported through Counseling as part of the school's Learning Support framework, with ongoing support and counseling services to help students.
Safeguarding	Safeguarding HJIS is a JCIS World School (joined 2024) and CIS-accredited (since 2018), with ECIS membership; these accreditations emphasize safeguarding, inclusive practices, and strong governance. Safety Protocols describe a culture of safety and trust and robust emergency communications. During emergencies, updates are provided through multiple channels (email, website, social media, phone), and dismissal follows strict identification and designee rules. The admissions policy states Horizon is non-discriminatory in admissions.	Safeguarding SIS is committed to safeguarding, with the school describing itself as committed to child safeguarding in its safeguarding and welfare practices.
Safeguarding policy	Safeguarding policy —	Safeguarding policy —
Facilities	Facilities
Facilities overview	Facilities overview Opened in 2019, Horizon Japan International School's Yokohama campus was purpose-built for 21st-century learning. It features bright, flexible classrooms, dedicated science laboratories, and creative studios to support IB programs. The Library & Media Center houses over 30,000 books, two librarians, and digital library resources. The campus includes expansive athletic spaces and a rooftop sports area known as The Nest for PE and events. The on-site cafeteria provides nutritious meals with vegetarian options, and microwaves are available for student use.	Facilities overview Shinagawa International School (SIS) operates three campuses: Aoyoko (Preschool–Kindergarten), Seaside (Grades 1–3), and Samezu (Grades 4–12). The Samezu Campus features spacious classrooms, a gym, dedicated spaces for music, visual arts, and design, a modern science lab, and a library/media center. The Seaside Campus provides spacious classrooms, a gym, a well-stocked library, and a rooftop playground. The Aoyoko Campus houses the Early Learning Center with an outdoor playground. Outdoor recreation is supported by the Samezu Athletic Park and Samezu Soccer Field, and the Seaside Campus features an outdoor rooftop play area. A Konami Sports Center is located nearby for swimming lessons and other activities.
Sports facilities	Sports facilities Expansive athletic spaces include a rooftop sports area called The Nest. There is also a rooftop gym (Hawks gym) that supports athletic activities.	Sports facilities Samezu Campus includes a gym and uses the nearby Samezu Soccer Field and Samezu Athletic Park for outdoor sports and recess. The Seaside Campus has its own gym and an outdoor rooftop play area, supporting physical education in all weather. The Aoyoko Campus includes an outdoor playground for younger children as part of outdoor activity. Konami Sports Center is located nearby and provides swimming lessons for SIS students.
Academic facilities	Academic facilities Opened in 2019, the campus features bright, flexible classrooms, dedicated science laboratories, and creative studios. The Library & Media Center houses over 30,000 books, two librarians, and provides a digital library and catalog to support research.	Academic facilities Samezu Campus features a modern science lab and a comprehensive library and media center. The Seaside Campus has a well-stocked library with more than 15,000 volumes and a library program that supports the PYP curriculum. The libraries on the Seaside and Main Campuses offer flexible, welcoming spaces for collaborative study and independent work, with laptops for online checkouts. The Main Campus hosts music rooms, visual arts spaces, and a design room, and there are English as an Additional Language classrooms and Japanese classrooms to support language development.
Extra curricular facilities	Extra curricular facilities HJIS offers a wide range of after-school programs, with over 60 ASPs, plus daycare services and summer programs. ASPs cover areas such as arts, robotics, chess, and athletics.	Extra curricular facilities Extracurricular activities include swimming classes and 70+ after-school programs. Swimming classes are held at the nearby Konami Sports Club Swimming Pool and are led by Konami coaches with SIS staff; there is an additional cost. After School Programs (ASPs) run on Tuesdays, Wednesdays, and Thursdays, offering activities across music, drama, sports, arts and crafts, and homework club. Programs cover academic clubs (for example, Model United Nations and language clubs), STEAM (robotics, coding, and design), and athletics (basketball, volleyball, badminton, yoga, Taekwondo). Some specialized programs may incur material fees.
Parent experience	Parent experience
History	History HJIS began life in 2003 as a Gakkō Hōjin (educational corporation) in Yokohama. It is a preschool through Grade 12 international school located along Yokohama's portside waterfront. Horizon Japan International School is an IB World School authorized to offer the PYP, MYP, and Diploma Programme. Over the years, it earned ECIS membership in 2010, CIS membership in 2011, WASC accreditation in 2012, IB authorization in 2013, and CIS accreditation in 2018. In 2019 the school opened a purpose-built campus in Yokohama to support 21st-century learning.	History Shinagawa International School originated in 2007 in Shibuya, Tokyo. The school relocated to Shinagawa Seaside in June 2018 to support growth and provide modern facilities. It now operates across three campuses—Aoyoko Campus (Early Learning Center), Seaside Campus (Grades 1–3), and Samezu Campus (Grades 4–12)—forming an IB continuum from early years through secondary. The school is governed by a dedicated school board and participates in international accreditation processes, including membership in the Council of International Schools (CIS) with accreditation in progress. The Parent Teacher Association is a parent-led body that collaborates with the school to support programs and community initiatives.
Community	Community HJIS brings together a diverse community with families representing more than 50 nationalities, and an alumni network spanning graduates in 30+ countries. The school supports formal community groups including a Parent Teacher Association (PTA), an Alumni Association, and Horizon Connect to keep current families, graduates, and staff connected. The International Cultural Festival and Sports Day are central events on the calendar, complemented by coffee mornings, cultural exchanges, and other community activities. Alumni events and reunions are held in Yokohama and Tokyo, reflecting the school's long-standing international connections.	Community Shinagawa International School maintains a diverse, multicultural community drawn from more than 40 nationalities, with families actively participating in school life. The Life at SIS section highlights a wide range of experiences, including after-school programs and residential trips that connect learning with real-world contexts. The school hosts a calendar of community and cultural events throughout the year, including a Winter Performance, International Children's Day activities, Japanese Culture Day, numeracy and science weeks, and a year-end celebration, all organized with PTA involvement.
Parent teacher association	Parent teacher association The Parent Teacher Association (PTA) coordinates volunteering, workshops, and school events to connect families with the school community. The PTA organizes major events such as the International Cultural Festival and Sports Day, as well as seasonal celebrations that bring families, students, and staff together. It runs volunteer opportunities through event committees, cultural booths, fundraising, and classroom support, inviting participation from all parents. Coffee mornings, socials, and cultural exchanges provide regular ways for families to connect and share experiences. Membership is open to all HJIS parents, with sign-up available on the PTA site or via a membership form, and volunteers are encouraged to contribute in any capacity.	Parent teacher association The SIS PTA is a parent-led volunteer group focused on two main goals: to support projects that enhance the educational experience and to create an inclusive community. All families are members, and the PTA is governed by a seven-member leadership committee (president, vice president, secretary, health coordinator, accountant, school lunch coordinator, and a staff representative) with monthly meetings to plan activities. The PTA also coordinates events such as Family Picnic, World Teachers' Day, Family Fun Day, Open House, Winter Performance, International Children's Day, Japanese Culture Day, Numeracy & Science Week, Literacy Week, Year-end Performance, and Year Book, and supports field trips and fundraising activities. The PTA Handbook provides details on roles, election processes, and annual dues (10,000 yen), as well as procedures for handing over responsibilities. Parent volunteers contribute to communications, decorations, and day-of-event support.
Extra-curricular	Extra-curricular
Academic & intellectual	Academic & intellectual The ASP offers more than 50 clubs and more than 300 student participants, spanning sports, music, art, robotics, and debate. Secondary ASPs include Model United Nations, advanced robotics, visual media, performing arts, and competitive sports, enabling students to deepen passions and take on leadership roles. Horizon also hosts IYPT Japan as the national organizer, coordinating training and national selection for the International Young Physicists' Tournament.	Academic & intellectual Shinagawa International School offers a broad slate of after‑school programs (ASPs) that emphasize academic enrichment and STEM. On Tuesdays, Wednesdays, and Thursdays, students can participate in over 70 ASPs each week, with programs rotating annually. Academic options include the Chinese Language Club, Japanese, Mindfulness Club, Newsletter, and Model United Nations, while STEAM offerings cover Robotics, Coding, Vision Math, Lego Construction, Book Illustration, Drama Club, and related topics. Some activities may involve material fees and are led by SIS staff or external instructors.
Arts & creative	Arts & creative Primary ASPs provide creative arts and language, along with sports, robotics, and dance. Secondary ASPs include visual media and performing arts. During ASPs, students have opportunities to engage in music and other arts, supported by dedicated facilities such as creative studios on campus.	Arts & creative Arts and creative activities are delivered through ASPs that span performing arts, visual arts, and design. Options include Ballet, Hip‑Hop Dance, Drum/Percussion Ensemble, Guitar, Voice Training and Recording, and Drama Club, along with visual arts such as Arts and Crafts, Loom Bands, Origami, Book Illustration, Sculpture, and Music Appreciation. These programs support creative expression, performance skills, and visual artistry across the school. Some activities may carry material fees and are run by school staff or external specialists.
Cultural & language	Cultural & language HJIS hosts international cultural events, including the International Cultural Festival (ICF), representing more than 40 nationalities with performances and workshops. The school provides cross-cultural exchanges and opportunities through activities such as Model United Nations and IYPT Japan, which Horizon organizes as Japan's national organizer. English as an Additional Language (EAL) support helps non-native speakers access the curriculum and participate in cultural and linguistic activities.	Cultural & language Cultural and language activities feature language clubs such as Chinese Language Club and Japanese language sessions, complemented by global‑minded programs like Model United Nations. The school calendar includes events such as Japanese Cultural Day and other cultural celebrations, along with International Children's Day, STEAM Day, and Literacy Week. Interdisciplinary Week Without Walls (ID WWW) and educational field trips further deepen cross‑cultural understanding.
Social & hobbies	Social & hobbies Students can join a wide range of ASP clubs—over 50—spanning social, artistic, and recreational interests, with hundreds of students participating each term. The school also runs inter-house competitions to promote teamwork and school spirit. Horizon's athletics program includes futsal, basketball, volleyball, and badminton with multiple age-group teams that compete in ISTAA leagues and regional tournaments. The campus features a rooftop sports area, The Nest, in addition to a full gymnasium to support informal and organized activities.	Social & hobbies Social and hobby activities are a core part of the ASPs, with more than 70 options weekly that span music, drama, sports, arts and crafts, and social clubs. Athletics options include Football Club, Table Tennis, Yoga, Gymnastics, Taekwondo, Basketball, Volleyball, and Badminton, allowing students to pursue shared interests and build friendships across grades. These programs are designed to foster social interaction, collaboration, and personal interests beyond the classroom.
Community & service	Community & service Service Learning is integrated across the IB continuum, with PYP projects like Rice Harvest and partnerships with local food banks (Onigiri Action and Kodomo Kitchen). The MYP highlights a Literacy Club and DP CAS projects include a student-led in-school MUN conference, building leadership, teamwork, and research skills. The school's PTA and broader Horizon community offer volunteering opportunities and events that foster community involvement.	Community & service Community and service activities are integrated into student life, including service activities and residential trips as part of experiential learning. The Parent Teacher Association (PTA) coordinates volunteering and community events, with all families automatically belonging to the PTA and encouraged to participate. Primary‑level residential trips and secondary‑level educational field trips help foster community, social responsibility, and real‑world engagement.
Leadership & professional	Leadership & professional Leadership is embedded in ASP offerings, including Model United Nations and opportunities for students to lead clubs and organize events. Service Learning features student-led MUN conferences and training sessions that develop public speaking, collaboration, and project management. Horizon MUN is an active program with annual events (e.g., Horizon MUN '26) that provide ongoing leadership and professional development experiences.	Leadership & professional Leadership development is supported through participation in Model United Nations and through immersive experiences like Interdisciplinary Week Without Walls (ID WWW), which includes projects in social entrepreneurship and collaborative problem solving. Experiential learning activities, including residential trips and field trips, are designed to build independence, resilience, and leadership skills. The PTA also provides leadership opportunities for parents to contribute to the school community.
Lifestyle & wellbeing	Lifestyle & wellbeing A strong athletics program runs futsal, basketball, volleyball, and badminton across grade levels, with teams competing in ISTAA leagues and tournaments to promote discipline and resilience. Facilities include a rooftop sports area (The Nest) and a three-story gymnasium that support physical education and healthy activity. The school also offers extended programs, including Summer School and other enrichment activities, to promote physical activity, social interaction, and well-being outside regular hours.	Lifestyle & wellbeing Wellbeing and physical wellness are supported by swimming classes at the Konami Sports Club, with SIS staff and external coaches, as well as indoor gym facilities at the Samezu Campus. Outdoor recreation is facilitated by access to the Samezu Soccer Field and other nearby athletic facilities, supporting PE and after‑school sports. ASPs also include Yoga and other mindfulness and fitness activities to promote physical and mental health.
Language provision	Language provision
Language provision	Language provision The main language of instruction is English across the IB programmes (PYP, MYP, DP). English as an Additional Language (EAL) support is provided from Early Years through the Diploma Programme, with integrated classroom support, small-group or one-on-one sessions, and focused development of reading, writing, speaking, and listening skills. In the Diploma Programme, Japanese is offered as DP language options (Japanese B and Japanese A LAL), alongside other language offerings such as Spanish AB, French AB, and English B, with a Language and Culture option listed among DP subjects.	Language provision English is the primary language of instruction across the Early Learning Center through Secondary. English as an Additional Language (EAL) classes are offered for students in Grades 1–10 to support non-native English speakers. Japanese language instruction is delivered through a Japanese as an Additional Language (JAL) program and a Kokugo program for proficient Japanese speakers; Kokugo follows a modified version of the national curriculum and is taught within the English-dominant program. Language learning is integral to SIS, with ongoing support for English and for students' native languages.
Bilingual teaching	Bilingual teaching —	Bilingual teaching —
Immersion programs	Immersion programs —	Immersion programs —
Reputation	Reputation
Awards	Awards —	Awards —
Accreditations	Accreditations Horizon Japan International School (HJIS) holds several formal accreditations and memberships that define its international standards and governance. Key accreditations include: - Western Association of Schools and Colleges (WASC): WASC is a U.S.-based accrediting body focused on educational quality, student outcomes, and institutional effectiveness. Horizon was accredited in 2019. - IB World School (PYP, MYP, DP): HJIS is authorized to offer the International Baccalaureate continuum (Primary Years Programme, Middle Years Programme, and Diploma Programme), reflecting adherence to IB's framework and international standards. - Gakkō Hōjin Accreditation (Kanagawa Prefecture): The school has official recognition by Kanagawa Prefecture as an educational corporation since 2004. - Japan Council of International Schools (JCIS) World School: JCIS membership was established in 2024, placing HJIS among a selective group of international schools in Japan. - Council of International Schools (CIS): CIS accreditation was achieved in 2023; CIS is a globally recognized accrediting network focused on learning, global citizenship, and well-being. Note: the school site also shows a past year of 2018 for CIS accreditation, but CIS's own accreditation notice confirms 16 February 2023. - European Council of International Schools (ECIS): Horizon is a long-standing ECIS member (more than 15 years), a professional learning community for international schools.	Accreditations - IB Continuum School (PYP, MYP, DP): Shinagawa International School is authorized to implement the IB Primary Years Programme, Middle Years Programme, and Diploma Programme, providing a single IB framework from early years through the end of secondary. This continuum supports consistent international standards across grade levels, including the Diploma Programme for Grades 11–12. - Council of International Schools (CIS) accreditation process underway: The school states that CIS accreditation is in progress, signaling an ongoing commitment to meeting international accreditation standards and continuous educational excellence.
Admissions	Admissions
Admissions	Admissions Step 1 – Gather the documents. Collect the items listed in the admissions guidance: Academic Records for applicants in Grade 1–12; Proof of payment of the application fee of 30,000 JPY; a scan of the student's passport or birth certificate for birth-date verification; photos of the student and guardian(s); a guarantee letter from the employer if the company will pay school fees; and any individualized learning plan (ILP) or other supporting documents. This collection ensures the admissions team has complete material to begin with and supports a smooth review. The documents are used to determine eligibility and placement, and to facilitate the review of the application package. Step 2 – Submit your application. Submit the online application and complete all checklist items in your account. The online submissions are routed through the school's admissions portal, and submitting the form triggers the review process once all required documents are received. This step marks the transition from document gathering to formal review. Step 3 – Submission Review. After online submission, the child may be invited for an interview and a placement assessment. The placement assessment helps determine the appropriate class placement and whether English as an Additional Language (EAL) support or other specialized assistance is required. The outcome of the assessment informs next steps and potential supports. Step 4 – Application Decision. Following the assessment and review of prior school records, the school decides whether the child may register. Families are notified by email as soon as possible of the outcome, and the actual registration occurs at this stage if a place is offered. This decision ties together assessment results, records, and space availability. Step 5 – Enrollment Begins. The admissions office determines the first day of the school, and a family orientation may be organized if applicable. A WIDA test for English as an Additional Language (EAL) learners will be conducted as part of the enrollment process. Enrollment activities culminate in the start of the new school term.	Admissions 1. Inquiry: Begin by reaching out with questions about Shinagawa International School (SIS) and its IB-aligned programmes. You can ask about facilities, the IB frameworks (PYP, MYP, DP), and the learning approach to determine fit for your child. The admissions team can provide guidance on requirements and next steps, and there is no obligation to proceed after an inquiry. 2. School Visit (highly recommended but not mandatory): Arrange a visit through the admissions page or the School Visit Reservation form to see classrooms, talk with staff, and observe the campus culture. A visit helps families understand daily routines, student life, and how SIS supports multilingual and international students. This step is not mandatory for applicants, but it is strongly encouraged for a comprehensive understanding of the environment. 3. Application Submission: Complete the application form and submit it along with the required application fee. Prepare any documents requested during the application process for a smooth review. This step is essential to move forward in the admissions process. 4. Interview – Assessment: After submitting the application, applicants undergo an interview and assessment. For students in Grade 1 and above, MAP Tests assess English, reading, and math levels as part of the evaluation. The admissions team will review the results after the interview and assessment. 5. Admission Decision and Acceptance: Admission decisions are communicated within a few weeks of the assessment. Accepted applicants receive an acceptance letter and enrollment instructions, including next steps for fee payments. 6. Enrolment: Parents complete the enrollment form and arrange the necessary school fee payments to finalize enrollment. Enrollment communications and invoices are issued to successful applicants when an acceptance is granted.
Scholarships	Scholarships Scholarships are available through the Corporate Contribution Plan. Scholarships are granted to students whose parents are employed by companies that participate in this plan. Detailed information about eligibility and how to apply is provided by the Business Office. Families interested in this option should contact the Business Office for further information.	Scholarships Shinagawa International School does not advertise formal scholarships. There is a tuition sibling discount of 10% for the second and any additional siblings. A third-child discount of 30% is described as applicable to current students.
Waitlist	Waitlist Horizon Japan International School uses a rolling admissions policy with a space-available basis. Applications are reviewed and considered as spaces open up, and there is no published waitlist system; families are typically informed by email if a place becomes available or if further steps are required. This approach means that admissions can occur at various times during the year depending on vacancies.	Waitlist There is no published waitlist or pool system described in SIS admissions materials. Applications are accepted year-round with no fixed deadline. Admission decisions follow the interview/assessment process, and decisions are communicated within a few weeks; acceptance letters and enrollment instructions are sent to successful applicants.
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