|Eishin Gakuen (Elementary school) was established where is currently known as Nishi-Tokyo City.
|The Eishin Gakuen corporate headquarter was moved to Iruma City in Saitama Prefecture and Higashino High School was opened.The school building and lay-out design was planned by Professor Christopher Alexander.
|The20th anniversary ceremony of the school's opening was held.
|The school uniforms for students were introduced. Comprehensive courses for university exam/entrance were coordinated and inaugurated.
|The construction of an artificial turf field was completed, and the entirety of the central courtyard was paved in order to provide safe and comfortable accessibility.
|Completion of a new building "Study House 21" which is equipped with digital study rooms.
|The beginning of school overseas excursion. The first destination was Southeast Asia.
|The ceremony for the 90th anniversary of the founding of Eishin Gakuen and for the 30th anniversary of the opening of Higashino High School was held.
A commemoration ceremony was conducted along with the publication of a magazine.
|The overseas excursion’s destination was changed from Southeast Asia to Canada.
|The class names will be changed, as follows; International “I” Class, Super “S” Class and Advanced “A” Class
|School bus service begins arriving at Haijima Station.
|School LAN equipped./ Saturday timetable revised .("Higashino SDGs" activities started)
|Multipurpose hall FVB (Future View Base) development.
|100th anniversary of the founding of Eishingakuen School, 40th anniversary of the opening of Higashino High School.