*From FY2021, Peter Pan Kindergarten and Aobadai Nursery School have been transferred to "Seisa Kodomoen KIDS planet",Seisa Junior High School, Seisa High School and Seisa Nagoya Junior High School have been transferred to "Seisa Educational Corporation" since FY2022.
To live together in harmony is an essential attribute for us human beings.
To learn together enriches our heart, to grow together develops trust, and to live together gives us joy.
Let’s keep cultivating our heart to be able to have this spirit.
This is a promise to all the people involved with SEISA.
What we aim for is a school where every student can be the main character, a school where every student takes initiative and participate. We have always kept in mind that children with various problems and difficulties, as well as those who want to find their new identities, should be able to make friends and participate in our fields of education with smiles. I am not an educator. If I were to categorize myself, I would probably be categorized as a person in the new field of "creating educational environments". Of course, I don't mean building buildings or schoolyards or anything like that. We consider deeply about “what we can do with this, or that?”, “what can we do if we have such opportunity?”, ”what can we do if we have such teaching materials?” and so on, then put into practice. If it is necessary for the children, we create it somehow, and we keep on doing it.
(from "Thoughts on the 30th Anniversary")
Throughout its 50-year history, SEISA has continued to create “what is necessary for the society" in the fields of education, welfare and healthcare. SEISA Kokusai High School, the core of SEISA’s junior high and high school programs, is a wide area correspondence high school which was established in 1999 as a completely new type of correspondence school, by applying all of the expertise accumulated at SEISA over the years.
SEISA’s education does not specialize for limited needs, but rather offers a wide range of options to meet the needs of every student. Our mission is to create opportunities, supports, environments that are required by the various needs of children. Nowadays terms such as "school refusal", "NEET" and "special needs education" have become more common, however, these are what SEISA has been working on for the past 50 years and has been doing as a matter of course.
| 1972 | Established Tsurugamine Seminar |
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| 1984 | Established SEISA (Miyazawa) Gakuen High School |
| 1985 | Establishment of Kokusai Gakuen Education Institute |
| 1986 | Opened Peter Pan Kindergarten |
| 1987 | Opened Yokohama International College of Social Welfare |
| 1993 | Opened SEISA (Miyazawa) Gakuen Subaru High School |
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| 1995 | Opened SEISA (Miyazawa) Gakuen Aoba High School Established International Miyazawa Educational Foundation Established Yokohama-Bhutan Friendship Association |
| 1997 | Opened SEISA (Miyazawa) Gakuen Shonan High School Opened SEISA Gakuen Junior High School Division Yokohama School |
| 1998 | Opened SEISA (Miyazawa) Gakuen University Department Established Learning Disability (LD) Development Consulting Center Kanagawa |
| 1999 | Established Agricultural Production Legal Corp, Hoshi-No-Shima Opened SEISA Kokusai High School and its District Core Centers in Sapporo, Yokohama, Osaka, Fukui Established Shonan Magic Wave Co.,Ltd |
| 2000 | Opened SEISA Kokusai High School Koriyama District Core Center Established Non-Profit Organisation Futuro |
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| 2001 | Opened SEISA Kokusai High School Fukuoka District Core Center Opened Okudera Sports Academy Established SEISA Social Welfare Organisation Opened Nogawaminamidai Nursery School |
| 2002 | Opened SEISA Kokusai High School Toyama District Core Center |
| 2003 | Opened Aobadai Kindergarten Opened SEISA Kokusai High School Hamamatsu District Core Center Opened Social Skill Course in SEISA Kokusai High School Opened SEISA Gakuen Shonan Junior High School |
| 2004 | Opened SEISA University Opened District Core Centers of SEISA Kokusai High School in Sendai, Tachikawa, Hiroshima and Okinawa |
| 2005 | Opened SEISA Junior High School Opened SEISA Kokusai High School Toubetsu and Yokohama-Kamoi District Core Centers Established Non-Profit Organisation SEISA Education Research Center |
| 2006 | Opened SEISA High School Opened SEISA Kokusai High School Atsugi District Core Center Opened Aobadai Nursery School Opened Nursing Care and Welfare Course in SEISA Kokusai High School |
| 2007 | Opened SEISA Kokusai High School Fukuoka-nishi District Core Center Opened SEISA Gakuen Yokohama-Portside and Omiya High Schools Opened SEISA General Education Research Centre Established Non-Profit Organisation Da-ko-on (Japanese drum performance group) Opened Kokusai Gakuen Education Institute After-school Kids Club |
| 2008 | Opened SEISA Kokusai High School Hachioji District Core Center |
| 2009 | Opened SEISA Shonan Oiso Campus Opened Nursery Teacher Course in SEISA Kokusai High School |
| 2010 | Opened SEISA Shonan Oiso Stadium Opened SEISA Kokusai High School Obihiro Campus Established All SEISA Kokusai High School Student Council and Alumni Association Established All SEISA Kokusai High School Parent Association and Alumni Parent Association Opened SEISA Takao Campus Opened SEISA Obihiro Satellite School Established Foundation for Global Children, General Incorporated Association Established Japan Space Weather Association, General Incorporated Association Established Non-profit Organization Shin-seisakuza |
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| 2011 | Opened SEISA Gakuen Hokuto School (by integrating Subaru and Aoba Schools) Opened Twinkle Kaminogawa Nursery School Opened SEISA Nagoya Campus |
| 2012 | Established SEISA Shonan Oiso Comprehensive Community Sports Club Opened SEISA Nagoya Jounior High School Opened SEISA Momiji Campus Opened SEISA Hakone Campus Established SEISA Hakone Sengokuhara Comprehensive Sports Club Opened SEISA Inatori Training Center |
| 2013 | Opened Twinkle Seya and Kunugizaka Nursery Schools Opened SEISA Sapporo Education Center Opened SEISA University Graduate School of Education Opened SEISA Kokusai High School Kagawa Campus (Takamatsu and Marugame) |
| 2014 | Opened SEISA Momiji Junior High School Opened Japan Professional School of Education (Graduate School) Established Association for Foreign Citizens Care Workers, General Incorporated Association |
| 2015 | Opened SEISA Kokusai High School Shonan District Core Center Opened SEISA Kokusai High School Nagoya District Core Center Established Leadership Institution for Medical Innovation Foundation for Global Children approved as a Public Interest Incorporated Foundation |
| 2016 | Opened SEISA Kokusai High School Takamatsu District Core Center Opened SEISA Kokusai High School Kokura Campus Opened SEISA Kokusai High School Naha Campus Established Kanagawa Supporting Association for JOCVs (Japan Overseas Cooperation Volunteers) Opened SEISA SEAGULL AGRASARA GARMENT in Chittagong, Bangladesh Established SEISA Athletic Club Designated management started at SEISA Lake Arena Hakone |
| 2017 | Established Hokkaido SEISA Gakuen Education Institute SEISA Dohto University SEISA Group approved as a General Incorporated Association Opened Graduate School of Practitioners in Education, SEISA University Graduate School of Education (by integrating Japan Professional School of Education) Renamed SEISA Kokusai High School Sapporo Education Center into Sapporo District Core Center Renamed SEISA Kokusai High Obihiro Campus to Obihiro District Core Center Opened SEISA Kokusai High School Kokura Campus Opened SEISA Kokusai High School Naha Campus Opened a certified child center Aobadai Kindergarten Started Local FM Shonan Magic Wave 85.6MHz |
| 2018 | Opened SEISA Kokusai High School Marugame District Core Center Opened SEISA Odawara Campus Opened SEISA Kokusai High School Odawara District Core Center Opened SEISA Kokusai High School Shizuoka Campus |
| 2019 | Changed Sapporo District-core center of SEISA Kokusai High School to Headquarters Opening of SEISA Kokusai High School Ashibetsu, Shizuoka, Kawaguchi District-core centers & Kita-kyushu, Asahikawa Campus SEISA Junior High School relocated to a new school in Kirigaoka |
| 2020 | Opening of SEISA Kokusai High School Kofu District-core center and Kita-hiroshima & Toyama campus Opening of SEISA Gakuen Hokuto Primary School Division Opening of SEISA University Graduate School of Education Doctoral Course |
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| 2021 | Opening of SEISA Kokusai High School Kita-hiroshima and Naha District-core Centers Opening of SEISA Gakuen Omiya Junior High School Division Establishment of Educational Corporation SEISA ECEC* KIDS planet (Peter Pan Kindergarten and Aobadai Kindergarten were transferred from Kokusai Gakuen Education Institute) * ECEC: Certified Center for Early Childhood Education and Care |
| 2022 | SEISA Group Celebrates 50th Anniversary Opened SEISA Kokusai High School Kita-kyushu District-core Center Opened SEISA Kokusai High School Toyama District-core Center Opened SEISA Kokusai High School "Cloud School" Established SEISA High School Narrow Correspondence Course Started operation of day-care center at Tokyo Metropolitan High School (NPO SEISA Education Research Center) Started operation of "Yuyuyu" Educational Support Center in Memuro-cho (Seisa Kokusai High School Obihiro District-core Center) Established Educational Corporation SEISA (SEISA Junior High School, SEISA High School and SEISA Nagoya Junior High School were transferred from Kokusai Gakuen Education Institute) Established Joint Venture Campany RAFT PROJECTS (commercialization of classes) |
| 2023 | Started SEISA Academy |
| 2024 | Opening of SEISA Kokusai High School Asahikawa District-core center |
