| 1988 Sep. | Established High School Division in Hibarigaoka Tokyo by Kabushikigaisha US Canada Gakuen |
|---|---|
| 1998 Apr. | Relocated school to Tokorozawa Saitama |
| 1999 Apr. | Established Junior High School Division |
| 2000 Apr. | The Annex building and dormitory |
| 2002 Apr. | Established Elementary Division |
| 2007 Oct. | School parking lots established |
| 2008 Oct. | The 20th Anniversary of Columbia |
| 2009 Jun. | The Elementary building and a full-size gymnasium |
| 2010 Apr. | Kabushikigaisha US Canada Gakuen runs Columbia International School G1 to G9 |
| 2013 Apr. | Established Kindergarten Division |
| 2018 | The 30th Anniversary of Columbia |
| 2023 | artificial turf in the field |