History of EDA
| 1969 | The EDA was established by the late Masaru Ibuka, who was appointed Chairman of the Board. Accredited as an incorporated foundation by the Ministry of Education. Issued the first "Early Development" Periodical. Opened children's classes. |
| 1970 | Started Mother's Study Meetings. |
| 1971 | EDA Periodical became a monthly in April. Chairman Ibuka wrote one of his major works, Kindergarten Is Too Late. |
| 1979 | Published Starting at the Age of Zero by Chairman Ibuka. Celebrated the 10th anniversary. Held an Early Development International Symposium |
| 1984 | EDA approved kindergartens across Japan as educational institutions in accordance with EDA theory. |
| 1985 | Published The Missing Half of Education by Chairman Ibuka. Held the first Concert for Prenatal Babies in affiliation with Sony Music and the Art Development Association. Initiated a local pilot project for the Mother & Child School in affiliation with the National Assembly for Youth Development and the Sony Foundation of Education. |
| 1986 | Masaru Ibuka wrote another of his major works, Zero-Years-Old. |
| 1989 | Celebrated the 20th anniversary. |
| 1990 | Accredited as a non-profit organization. |
| 1992 | Chairman Ibuka was decorated with the Order of Cultural Merit by His Majesty the Emperor of Japan. Published From A Fetus - Education for The Unborn Child by Chairman Ibuka. |
| 1997 | Masaru Ibuka, the Founder of EDA, passed away on December 19. |
| 1998 | The Early Development Monthly was renamed the EDA. Established pilot classes in Todoroki, Tokyo. |
| 1999 | Celebrated the 30th anniversary on October 30. Started the Movement for Baby World 21. |
| 2001 | The Early Development Association changed it's name to Sony Foundation for Education Early Development Activity Center (EDA). |
| 2003 | Refurbished Kindergarten is too late(with commentary) |
