Founded as a high school in 1958, it operated until 1988 and was later re-opened in 2010.

Edgewood High School was originally established in 1958 by the Covina Union High School District after they bought land from the Hurst Family Ranch.

It was announced that due to budget deficits, Edgewood High School would be closed after the 1987-88 academic year, leaving West Covina High School as the only high school in the entire district.

[3] The district initially planned to sell the campus and consolidate the grades 7 to 8 programs from three other elementary and intermediate schools all at one campus, generating much controversy among parents and stakeholders.

[4] With West Covina High facing overcrowding problems, the district decided to re-open Edgewood High School on the middle school site.