Local Gentlemen, Akira Sakatani will became the first director of Kojokan.
Mr Sakata Keiken appointed as the Second Generation- President.
It becomes a private school with kanji and mathematics as two departments.
Mr Yamashita Akiduo as Third Generation - President.
To set up general education curriculum in Junior High School.
Set up of Commercial School.
Takeshi Yamashita became the Fourth Generation-President.
Junior high school and high school (ordinary, commercial, industrial) established by school reform. Normal course specialization
Founding 100th anniversary ceremony was held.
The school gates, former auditorium, and red plum blossoms will be Okayama prefecture designated historical sites.
Setting up of Department of Electrical.
To commemorate the completion of the South Building as training building.
Founding 110th anniversary ceremonial.
Erected in front of the gate (The Monument of The World) and next to the school gate ( White Deer Cave Bulletin Board)
Founding 120th anniversary ceremonial.
Mr. Okuo Otsuka became the Director and Mr. Tatsuya Morimoto became the Principal.
Mr. Tatsuya Morimoto becomes the President and Principal.
Founding 130th anniversary ceremonial.
Gymnasium completed as a memorial project.
Archery field completion.
Inauguration of Principal Yoshitaka Yamashita.
Completion of the new building, together with a memorial ceremony.
Founding 140th anniversary ceremonial.
Yukio Morita was appointed principal.
Okayama Prefecture Designated Historical Site, Kojokan Auditorium, Repair and Maintenance work completed.
Otsuka Nagamori appointed as Director
Department of studies reorganization, which involved General Studies Department, Information Business Department and Information Technology Department.
Masahiro Mishima became the principal.
Harada Sumihiko became President. Student dormitory, Kojokan library were completed.
Kazuhito Fukuda became the principal.
Takayuki Otsuka appointed Chief Director.
Founding 150th anniversary ceremonial.
General course of Super Academy course.
Regional seminar started.
Women's 17th National High School Ekiden relay races.
All are ordinary courses. Super advanced courses are divided into two courses of A and B,
Basic course are comprehensive course course and information business course,
Three courses of engineering which based on “thesis” as the school setting subject.
Inoue Kazuma appointed as The President.
Participated the 80th national high school baseball championship.
Shogo Otani became the Principal.
School bus service started in Higashi Fukuyama Fuchu.
Set up the advance science course and increase the number to 60 people.
Established general advanced course, regional industry, civil service system.
"Anthropology" is the school designated core subject.
Runner up for the Women's 22nd National High School Ekiden Race Tournament.
Started operating school bus on the 4th Route, towards Kawakami / Shin Kurashiki.
Founding 160th anniversary ceremonial.
New School Building (East Building)· Harada Tsunji Memorial Stadium· Komatsu Yasuhiro Memorial Education Dormitory Completed.
Ayako Sakatani became the eighth President.
Reformed of National Public Special Admission for the regional Industry, culture and sports courses.
Completely new courses established, renamed regional industry as career design course, culture and sports as sports course.
Completely new courses established.
Okihisa appointed Principal.