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- August 1970
- Institute of Special Education Class for Gifted Children established at Kawaijuku Educational Institution (Nagoya) to develop the intellect of young children between the ages of 2 and 12 years.
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- January 1973
- Kawaijuku Special Education Institute for Children with Advanced Learning Capabilities established.
Professor Yoshihisa Shioda of Nagoya University joins as an advisor.
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- April 1973
- Demand grows for comprehensive preschool education. Kawai-juku Preschool opened to run four-days a week.
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- September 1973
- SGK intelligence tests (individualized) developed under Professor Shioda.
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- January 1975
- Name changed from Kawai-juku Preschool to Kawai-juku Preschool for Gifted Children.
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- March 1976
- Partnership established with the Dalton School of New York. Marion B. Plexico welcomed as an advisor. Professor Hiroshi Azuma of University of Tokyo and Professor Toshio Tatsumi of Tokyo Gakugei University become advisors,
and the name Kawaijuku Special Education Institute for Children with Advanced Learning Capabilities is changed to Kawaijuku Dalton School.
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- April 1976
- Tokyo Dalton School opened at Ochanomizu in Tokyo.
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- April 1977
- Name changed from Special Education Kindergarten to Dalton Preschool.
Four-day-a-week Dalton Preschool established at the Tokyo Dalton School.
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- April 1979
- Tokyo Dalton School is relocated to Uehara in Shibuya-ku. Name changed from Dalton Preschool to First Program, changing to five- day-a-week program.
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- January 1982
- In Nagoya, the school is relocated to a newly constructed school building and name changed to Kawaijuku Dalton School.
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- April 1982
- Two years old class is opened.
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- April 1983
- Marion B. Plexico appointed the director of Tokyo Dalton School and honorary director of Kawaijuku Dalton School.
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- April 1984
- Play Group established at the Tokyo Dalton School for two-years old.
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- June 1988
- Kawaijuku Dalton School’s classes for elementary school children are relocated to a new school building.
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- August 1990
- Marion B. Plexico appointed the director of Kawaijuku Dalton School.
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- April 1991
- One-year old class is opened at Kawaijuku Dalton School.
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- September 2000
- Classes for elementary school children, one-year old and two-years old at Kawaijuku Dalton School are relocated to a new school building.
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- April 2001
- The names Dalton School Nagoya and Dalton School Tokyo are designated as common appellation instead of Kawaijuku Dalton School and Tokyo Dalton School.
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- April 2002
- Marion B. Plexico becomes the supervisor and Toyoko Nishikawa is appointed the director.
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- April 2005
- Eiji Hoshiai appointed the director of Dalton School Tokyo.
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- January 2009
- Dalton School Tokyo’s new school building is completed.
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- April 2010
- Mitsuru Azumi appointed the director of Dalton School Nagoya.
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- April 2016
- Naoko Matsuda appointed the director of Dalton School Tokyo.
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- April 2022
- Naori Ito appointed the director of Dalton School Nagoya.
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- December 2023
- Dalton School Nagoya’s new school building is completed.
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- January 2024
- All courses at Dalton School Nagoya are relocated to the new building.
■ Business Report Kawaijuku Gakuen annual report for 2023
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Dalton School Tokyo
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Dalton School Nagoya New Building (Conceptual drawing of completion)