St. Francis High School is a Catholic college preparatory high school for boys, located in La Cañada Flintridge, California, USA.

Founded in 1946 by the Capuchin Franciscan Friars, St. Francis High School is a Catholic, college preparatory school for young men in grades 9-12 and is fully accredited by WASC and WCEA.

St. Francis High School of La Canada-Flintridge, a non-profit religious corporation, is operated by the Board of Directors under the sponsorship of the Capuchin Franciscan Order of the Western America Province.

[3] The demographic breakdown for the 675 boys enrolled in 2013-2014 was:[1] The St. Francis Golden Knights compete in the Mission League, part of the CIF Southern Section.

The following varsity sports are offered:[4] 1982- CIF Champions CFU 2020 - Basketball Southern California State Champions (Coach: Todd Wolfson) 2021 - CIF Champions Lacrosse (Coach: Don Bowers)