 Through their emphasis on liberal arts education and respect for all cultures, the Sisters worked to promote the growth of the human person by creating an environment which enabled young women to work for their own spiritual, educational, and personal development.In 1946, the Most Reverend John J. Cantwell, Archbishop of Los Angeles, established Cantwell High School.At the time of its founding, the school was temporarily located on the top floor at St. Alphonsus Grade School, in East Los Angeles.