Immaculate Heart High School is a Catholic, all-girl, college preparatory school located in the Los Feliz neighborhood in Los Angeles, California, at the intersection of Franklin Avenue and Western Avenue. There are approximately 200 students in the middle school (grades 6-8) and over 550 in the high school (grades 9-12). It is located in the Roman Catholic Archdiocese of Los Angeles. It was founded in 1906 by the Sisters of the Immaculate Heart of Mary.