Cajon High School is located in the University District of San Bernardino, California, and is part of the San Bernardino City Unified School District.

[2] Cajon High School is part of the International Baccalaureate Organization (IB)[3] including the high school portion of the Middle Years Programme and IB Diploma Programme.

It has exemplary Mock Trial[4] and Academic Decathlon[5][6] teams, and numerous Cajon students are members of the California Scholarship Federation,[7] National Honor Society[8] and the National Forensic League Debate and Speech Honor Society (National Speech and Debate Association).

In the 2007-2008 school-year, Cajon won 12 San Andreas League championships (Arroyo Valley, Carter, Colton, Pacific, Rialto, San Bernardino, & San G) and the girls basketball team also won the CIF championship for the first time in Cajon's history (for any basketball team).

[10] In 2017 Cajon won its second CIF football championship 54-28 against Downey High School.