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Oldest Private High Schools in California

The average private high school in California was founded around 1975 (2024-25).

The oldest private high school in California is San Domenico School, founded in 1850.

Accelerator School OC Photo - Accelerator School DC Metro. Our new home!

Fusion Academy Los Gatos Photo - Each Fusion campus has a state-of-the-art music studio with professional-grade tools. Students can explore instruments, vocals, songwriting, DJ performing arts, and more.

Westridge School Photo - Westridge is an independent, forward-thinking girls school for students in grades 4-12. We are committed to educating intellectually adventurous thinkers, and courageous, compassionate leaders.

Fusion Academy San Diego Photo - Classes at Fusion are one-to-one: one student and one teacher per classroom. Students have different teachers for different subjects, and teachers act as mentors in the one-to-one setting.

Fusion Academy Huntington Beach Photo - Each Fusion campus has a state-of-the-art music studio with professional-grade tools. Students can explore instruments, vocals, songwriting, DJ performing arts, and more.

Fusion Academy Los Angeles Photo - Each Fusion campus has a state-of-the-art music studio with professional-grade tools. Students can explore instruments, vocals, songwriting, DJ performing arts, and more.

Capistrano Valley Christian Schools Photo - Since 1973, Capistrano Valley Christian Schools has been dedicated to providing a high standard of college preparatory education, set within the framework of Christ-centered instruction and example. Our staff is committed to partnering with an extremely supportive school community to offer a truly unique educational experience.

Orion International Academy Photo - Cross-Country Team

Lycee Francais De San Francisco Photo - Respect, one of the LFSF values, is essential to building a trusting and healthy learning environment. At LFSF, we emphasize the importance of inclusion through respect for others as well as self-respect.

Lycee Francais de San Francisco LFSF Photo

Fusion Academy Walnut Creek Photo - Classes at Fusion are one-to-one: one student and one teacher per classroom. Students have different teachers for different subjects, and teachers act as mentors in the one-to-one setting.

St. Francis High School - Salesian College Preparatory Photo - Experience the biomedical science pathway or computer science in a small, personal learning environment. We have a 12:1 student-teacher ratio and class sizes averaging 20.

The Compass School Photo - The Compass School is an online K12 School. We offer hundreds of live online courses with expert faculty (over 95% of our teachers have a Masters Degree or Higher). Our affordable homeschool program gives students a flexible high quality schooling option that can be taken from anywhere.

Fusion Academy Westlake Village Photo - Classes at Fusion are one-to-one: one student and one teacher. Teachers personalize content and act as mentors in the one-to-one setting.

Pacific Lutheran Junior / Senior High School Photo - Pacific Lutheran Jr./Sr. High School's year-end teambuilding trip on the rapids!

The Harker School Upper School Photo - Harker's Eagle Buddies program matches upper school students with lower school students for three years. The buddies meet 3 times per year for fun and food!

Fusion Academy Newport Beach Photo - Classes at Fusion are one-to-one: one student and one teacher. Teachers personalize content and act as mentors in the one-to-one setting.

Year Founded Range: 1850 1909 Avg. Year Founded: 1886

Frequently Asked Questions

What is the California average private high schools founding year?

The California average private high schools founding year is 1975 for 2024-25.

What are the private high schools with oldest founding year in California?

The top ranked private high schools in California include San Domenico School, Bellarmine College Preparatory and Notre Dame High School.

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