[3] Rancho Cucamonga High School opened in August 1992 with an enrollment of approximately 1,500 ninth to eleventh grade students.

The RCHS AFJROTC won fourth place at the Fontana High School Drill meet.[when?]

[8] The school has a number of varsity sports teams and performing arts programs, including Boys' and Girls' Basketball, Tennis, Baseball/Softball, Swimming, Water Polo, Track & Field, Cross Country, Soccer, Boys' Football, and Golf.

RCHS also hosts an event for military veterans, called Rancho Remembers, which is held every April/May.

[10] The school has been primarily noted for its production of standout defensive backs, with 3 of them going on to become 2nd round NFL Draft picks.

[11] In 2016, construction of a brand new football and track stadium was completed allowing students to play games at home for the first time in the school's history.

Rancho Cucamonga High School, as a result, received its own football and track facility, as well as new tennis courts, an auditorium, and a new classroom building.