St. Joseph High School opened in 1964 and graduated its first class in 1968.

[2] In 2013, Shane Villalpando, a former St. Joseph High School student, was sentenced to one year in Santa Barbara County Jail and five years probation for having unlawful sex with underage teenagers at the high school.

Both resigned from their positions in 2012, were convicted of a misdemeanor, and were ordered to pay several hundred dollars in fines.

[3] St. Joseph High School athletic teams are nicknamed the Knights.

Previously, SJHS was a long-time member of the CIF Southern Section (CIF-SS)[4] and competed in the Pac-8 League.