The school provides instruction from preschool through eighth grade.

[2] Cornerstone Christian School's athletic teams were nicknamed the Eagles.

During its history as a high school, CCS was a member of the CIF Southern Section (CIF-SS) and competed in small-school conferences such as the Condor and Omega leagues.

[3][4] The school earned a total of six CIF-SS titles including back-to-back section championships in girls' volleyball (1996, 1997),[5]: 321  softball (1998, 1999),[5]: 161  and baseball (2009, 2010).

[5]: 11  Cornerstone Christian dropped athletics in 2010 due to budget cuts; this led to a sharp decrease in enrollment that prompted the elimination of high school grades in 2011 after three decades as a K–12 school.