|English name||Eishin Gakuen School Foundation Higashino High School|
|Managing Director||Susumu Nakagawa|
|Address||112-1 Nihongi, Iruma City, Saitama Prefecture, 358-8558|
|Limit Capacity of Students||1,050 350 in each grade|
|Land Area||64,786.89 ㎡|
|1925||Eishin Gakuen (Elementary school) was established where is currently known as Nishi-Tokyo City.|
|1985||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.|
|2005||The20th anniversary ceremony of the school's opening was held.|
|2007||The school uniforms for students were introduced. Comprehensive courses for university exam/entrance were coordinated and inaugurated.|
|2011||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.|
|2013||Completion of a new building "Study House 21" which is equipped with digital study rooms.|
|2014||The beginning of school overseas excursion. The first destination was Southeast Asia.|
|2015||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.
|2016||The overseas excursion’s destination was changed from Southeast Asia to Canada.|
|2019||The class names will be changed, as follows; International “I” Class, Super “S” Class and Advanced “A” Class|