Here is a partial list of the oldest schools in California.
Christian Brothers High School is founded in Sacramento.
Notre Dame Academy for girls high school is established by the sisters of Notre Dame in Alameda, CA.
In 1932 St. Joseph's High School for boys was established by the Brothers of Mary on the same block of Chestnut St.
Crafton Elementary School in Redlands, California Watsonville High School in Watsonville California, Established in 1892