Junípero Serra High School is a private, Roman Catholic High School in Gardena, California, a suburban city located 14 miles southwest from Downtown Los Angeles. Honored as a State School of the Year, Serra is operated by the Roman Catholic Archdiocese of Los Angeles.

Gardena is a city located in the South Bay region of Los Angeles County, California, United States. The population was 58,829 at the 2010 census, up from 57,746 at the 2000 census. Until 2014, the US census cited the City of Gardena as the place with the highest percentage of Japanese Americans in California. Gardena's Japanese American population contributes to the South Bay region of Los Angeles being home to the highest density of Japanese companies within the mainland United States.