Mater Dei High School, a privately owned entity headquartered in the US, was founded in 1950 and employs approximately 390 individuals. It functions as a private, Catholic, co-educational secondary school in Santa Ana, California, administered by the Diocese of Orange. The school is recognized for its sports programs, particularly in football, and was ranked by Bleacher Report in 2014 among the top five high schools in the U.S. for producing professional athletes.