Kosei Gakuen Senior and Junior High School

What Kosei Gakuen Senior and Junior High School does

Kosei Gakuen (学校法人 佼成学園) is a private Japanese educational foundation incorporated in 1954 under the founding philosophy of 心身一如 (unity of mind and body), aiming to cultivate well-rounded individuals for a peaceful society. It operates a vertically integrated educational portfolio spanning three institutions: Kosei Gakuen Boys' Junior and Senior High School in Suginami Ward, Tokyo (founded as a boys' school with an entry-examination-based enrollment process); Kosei Gakuen Girls' Junior and Senior High School in Setagaya Ward, Tokyo (offering multiple specialized course tracks including Super Global, Study Abroad, Special Progress, and Advanced); and Kosei Gakuen Kindergarten. The institution graduated its 72nd cohort in 2026, reflecting continuous multi-decade operation.

The schools deliver their core educational product through on-campus, in-person instruction supported by an ICT backbone that issues each student an iPad and combines digital and analog (blackboard) instruction methods in a hybrid model. The girls' school has been designated as a DX (Digital Transformation) High School, enabling government-recognized advanced STEM and digital literacy programs. Specialized course tracks at the senior high level (SG, SA, SH, SC) and junior high level (Global, Liberal Arts) provide differentiated academic pathways, complemented by inquiry-based learning (探究学習) with annual Presentation Day events, dedicated English instruction, and a broader global education curriculum. International partnerships are a core component: students participate in study abroad programs to New Zealand and Korea, SOAS London online research programs, Thailand fieldwork, and university-linked courses with Tokyo University of Technology, Seijo University, Sophia University, Aoyama Gakuin University, Tokyo City University, and Tokyo University of Science.

Revenue is generated primarily through recurring tuition and entrance fees from individual student enrollment, supplemented by minor revenue from certificate issuance (200–500 yen per document for graduation certificates and transcripts in Japanese and English) and a 70th-anniversary commemorative fundraising campaign launched in September 2024. Distribution is conducted via direct entry examinations with multiple formats (regular, returnee, transfer), supported by open campus events, school explanation sessions, summer school tours, and partnerships with educational information platforms (NettyLand, School-Pot). The foundation is governed by a 理事長 (Chairman of the Board), with operational leadership at each school led by a 校長 (Principal); the institution is privately held with no external investors, parent company, or funding rounds disclosed.

Name

Kosei Gakuen Senior and Junior High School

Legal name

学校法人 佼成学園

Website

https://kosei.ac.jp

Company type

Private

Founded year

1954

Operating status

Operating

Headcount range

11–50 employees

Short description

Kosei Gakuen (学校法人 佼成学園) is a private Japanese educational foundation founded in 1954, operating a boys' junior/senior high school, girls' junior/senior high school, and kindergarten across two Tokyo campuses, serving individual student consumers through tuition-based enrollment, specialized academic tracks, and international exchange partnerships.

Ownership category

akta.pro rank

Product category

Private Secondary Education

NAICS

Elementary and Secondary Schools (6111), Elementary and Secondary Schools (611110), Elementary and Secondary Schools (61111)

SIC

Services-Educational Services (8200)

akta.pro primary industry

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

akta.pro secondary industries

Secondary School Exchange Programs (Academic Year/Semester) (EDAIAHAB), Overseas Summer School Programs (Secondary) (EDAIAHAC), International Curriculum Early Learning Academies (e.g., IB Early Years) (EDACADAK)

Keywords

• Private secondary education
• Junior high school
• Senior high school
• International education programs
• Kindergarten education

Headquarters

HQ city

Suginami, Tokyo

HQ country

Japan

HQ region

Asia

Offices2 records

Markets served

GTM type

B2C

Offering type

Services

Cost components

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

Revenue model

1. Tuition and Fees: Revenue generated from student tuition payments, including entrance fees and ongoing educational service fees
2. Certificate Issuance: Revenue from issuing official documents such as graduation certificates, transcripts, and academic records to students and alumni

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels6 records

Core offering

学校法人 佼成学園 (Kosei Gakuen) operates three schools: a boys' junior and senior high school in Suginami, Tokyo; a girls' junior and senior high school in Setagaya, Tokyo; and a kindergarten. The schools deliver comprehensive secondary and early-childhood education through specialized course tracks (Super Global, Study Abroad, Special Progress, Advanced, Global, Liberal Arts), inquiry-based learning, English and digital education programs, and university partnership initiatives, funded primarily through tuition fees.

Product overview

Kosei Gakuen (学校法人 佼成学園) is a Japanese educational institution operating a multi-school campus consisting of a boys' junior and senior high school, a girls' junior and senior high school, and a kindergarten. The institution offers a comprehensive educational portfolio including specialized course tracks (Global Course, Liberal Arts, Super Global/SG, Study Abroad/SA, Special Progress/SH, and Advanced/SC courses), inquiry-based learning programs, English education, digital education under the DX High School program, and university partnership initiatives. The schools are located in Suginami and Setagaya wards of Tokyo, serving students from early childhood through secondary education.

Differentiator

Problem solved

Functional benefit

Brands

• SGコース (Super Global Course): Super Global Course — a specialized program for developing global leaders with international awareness, featuring overseas study components including London University研修.
• SA留学コース (Study Abroad Course)
• SH特進コース (Special Advancement Course)
• SC進学コース (Advanced Course)
• KGGS特進留学コース (Kosei Global Girls Study Course)
• グローバルコース (Global Course)
• リベラルアーツコース (Liberal Arts Course)
• れいほう会

Products and services

• Kosei Gakuen Boys' Junior and Senior High School (佼成学園中学校・⾼等学校, 男子校)

Quantifiable outcome

• Super Global Class students complete academic research papers through London University SOAS programs
• +1 more outcomes

Segments2 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Nine partnerships are on record, tiered core and minor.

• Tokyo University of Technology (東京工科大学)coreStrategic or Co-development Partner · 14 March 2023Formal partnership agreement for collaborative educational programs. Tokyo University of Technology provides university lectures, campus tours, and collaborative programs including Science English Camp and career design classes.
• Seijo University (成城大学)coreStrategic or Co-development Partner · 11 March 2020Partnership for advanced educational and research activities. Seijo University offers collaborative seminars and university preparation support.
• Sophia University (上智大学)minorStrategic or Co-development PartnerHigher education collaboration for international studies and career guidance programs.
• Aoyama Gakuin University Earth Social Science Department (青山学院大学地球社会共生学部)coreStrategic or Co-development PartnerJoint lectures and workshops with university students, including annual collaborative research presentations and fieldwork preparation programs.
• Tokyo City University (東京都市大学)minorStrategic or Co-development PartnerScience Day collaboration providing science-related lectures and workshops for students.
• London University SOAS (ロンドン大学SOAS校)coreStrategic or Co-development PartnerOnline academic lectures and research paper guidance for Super Global Class students, including 3-week intensive programs and thesis development.
• JICA (ジャICA)minorStrategic or Co-development PartnerGlobal education partnership providing international understanding programs and development education workshops.
• Tokyo University of Science (東京理科大学)minorStrategic or Co-development PartnerScience education collaboration including Cosmos Education Program Bootcamp participation.
• Japan International Cooperation Agency (JICA地球ひろば)minorStrategic or Co-development PartnerInternational cooperation education programs for understanding global development issues.

Scale indicators2 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• St. Mary's International School: International school in Tokyo offering full IB curriculum and English-language instruction, serving as a broader incumbent alternative for families seeking international K-12 education.
• Keio Gijuku: Major Tokyo private K-12 and university institution with extensive international programs and dominant brand; competes for top-tier students and offers a relevant comparable at much larger scale.

Direct peers

• Azabu Gakuen: Prestigious Tokyo private K-12 institution with strong international curriculum and inquiry-based learning, closely overlapping with Kosei Gakuen's SG and Liberal Arts tracks.
• Musashi Gakuen: Historic Tokyo private school recognized for rigorous academics and university placement, comparable to Kosei Gakuen's senior high programs in selectivity and tuition positioning.
• Seikei Gakuen: Established Tokyo private K-12 school with strong international programs and university placement track record, directly comparable to Kosei Gakuen in mission, audience, and emphasis on global education.
• Waseda Jitsugyo Gakuen: Prominent Tokyo private K-12 school with extensive international programs and well-known alumni network, directly competing for similar affluent families seeking university-prep education.
• Kunitachi Gakuen: Long-standing Tokyo private boys' school with university-prep focus and similar profile to Kosei Gakuen's boys' campus, comparable in selective admissions and English education emphasis.
• Gyosei Gakuen: Tokyo private boys' school with strong international and global education programs, comparable in scale and demographic targeting to Kosei Gakuen's boys' school.

Emerging players

• Toa International School: Smaller international school in Tokyo focused on bilingual education and global curriculum, partially overlapping with Kosei Gakuen's international programs but at a different scale.

Regional players

• Tokyo Metropolitan Tachibana High School: Tokyo metropolitan public high school with strong international and academic programs, representing the public alternative competing for the same student demographic pool.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights7 records

Customer concentration

• Xx.com/koseigirls_jp
• Instagraminstagram.com/kosei_girls/?hl=ja
• LinkedInlinkedin.com/company/kosei-gakuen-senior-and-junior-high-school

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

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 Kosei Gakuen Senior and Junior High School