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Best California Private High Schools Belonging to No Membership Association (2025-26)

For the 2025-26 school year, there are 905 private high schools belonging to No Membership Association in California. You can also find more schools membership associations in California.
The top ranked private high schools belonging to No Membership Association in California include Alsion Middle/High School, Oakwood School, and BASIS Independent Fremont.

Top Ranked Private High Schools Belonging to No Membership Association in California (2025-26)

School
Location
Quick Facts
Alsion Middle/High School
Alsion Middle/High School Photo - Alsion School is a non-profit Montessori based program that serves grades 7-12 in the Mission area of Fremont, CA.
Montessori School
(2)
750 Witherly Ln
Fremont, CA 94539
(510) 445-1127
Gr: 7-12 | 48 students Avg. class size: 12 students Extracurrculars: 12 Tuition & acceptance rate listed
BASIS Independent Fremont
BASIS Independent Fremont Photo
(1)
3300 Kearney Street
Fremont, CA 94538
(510) 722-1056
Gr: PK-12 | 698 students Avg. class size: 15 students Sports: 9 | Extracurrculars: 31 Tuition & acceptance rate listed
BASIS Independent Silicon Valley
BASIS Independent Silicon Valley Photo
(1)
1290 Parkmoor Avenue
San Jose, CA 95126
(669) 766-1001
Gr: PK-12 | 1,248 student Avg. class size: 15 students Sports: 4 | Extracurrculars: 83 Tuition & acceptance rate listed
California Crosspoint Academy
California Crosspoint Academy Photo - Our firm belief and practice is that all students can excel given the right environment and opportunity. All of our students have many opportunities and the support needed to find their passion and God-given calling for their lives.
(Christian)
25500 Industrial Blvd
Hayward, CA 94545
(510) 995-5333
Gr: NS-12 | 642 students Avg. class size: 20 students Sports: 10 | Extracurrculars: 30 Tuition & acceptance rate listed
Calvary Preparatory Academy-Online
Calvary Preparatory Academy-Online Photo - Providing excellence in online education since 2009, CPA offers a fully online, Christian education for students from kindergarten through 12th grade leading to completion of an accredited high school diploma. Calvary Prep Academy is accredited in grades 7-12 by WASC (Western Association of Schools & Colleges) and offers NCAA and University of California "a-g" approved courses.
(Christian)
(22)
1740 La Costa Meadows Dr. Suite 105
San Marcos, CA 92078
(760) 410-8283
Gr: K-12 | 348 students Avg. class size: 15 students Extracurrculars: 12 Tuition listed
Campbell Hall
Campbell Hall Photo
(Episcopal)
(10)
4533 Laurel Canyon Blvd
Valley Village, CA 91607
(818) 980-7280
Gr: K-12 | 1,148 student Avg. class size: 14 students Sports: 13 | Extracurrculars: 1 Tuition listed
Capistrano Valley Christian Schools
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.
(Christian)
(16)
32032 Del Obispo St
San Juan Capistrano, CA 92675
(949) 493-5683
Gr: PK-12 | 710 students Avg. class size: 16 students Sports: 14 | Extracurrculars: 6 Tuition & acceptance rate listed
Drew School
Drew School Photo - We know that teenagers learn better and achieve more when they're in an environment where their happiness, well-being and ideas are taken into account. That's why we've spent years developing a unique and supportive culture that removes barriers to learning, boosts confidence, and sets students up to be the best learners they can be.
(3)
2901 California St
San Francisco, CA 94115
(415) 430-3737
Gr: 9-12 | 284 students Avg. class size: 14 students Sports: 14 | Extracurrculars: 5 Tuition listed
Dunn School
Dunn School Photo - The outdoor education program at Dunn School fosters greater self-awareness through physical challenges and leadership experiences in the outdoors.
(5)
2555 West Highway 154
Los Olivos, CA 93441
(805) 688-6471
Gr: 6-12 | 256 students Avg. class size: 10 students Sports: 13 | Extracurrculars: 12 Tuition & acceptance rate listed
EF Academy Pasadena
EF Academy Pasadena Photo - Hands-on learning encourages our students to make their own discoveries. Calculate velocity in the real world by measuring the speed of a baseball!
(1)
1505 E Howard St.
Pasadena, CA 91104
(626) 507-9223
Gr: 9-12 | 265 students Avg. class size: 18 students Sports: 6 | Extracurrculars: 20 Tuition listed
Excelsior School
Excelsior School Photo - School Front View
(2)
41 W Santa Clara Street
Arcadia, CA 91007
(626) 623-6339
Gr: 9-12 | 81 students Avg. class size: 18 students Sports: 4 | Extracurrculars: 8 Tuition & acceptance rate listed
Fusion Academy Aliso Viejo
Fusion Academy Aliso Viejo 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.
120 Vantis Dr, Suite 100
Aliso Viejo, CA 92656
(877) 673-8893
Gr: 6-12 Avg. class size: 1 student Extracurrculars: 3 Tuition & acceptance rate listed
Fusion Academy Walnut Creek
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.
Alternative School
3003 Oak Road, Suite 150
Walnut Creek, CA 94597
(877) 673-8893
Gr: 6-12 | 52 students Avg. class size: 1 student Tuition & acceptance rate listed
The Harker School Upper School
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!
500 Saratoga Ave
San Jose, CA 95129
(408) 249-2510
Gr: K-12 | 798 students Avg. class size: 10 students Sports: 15 | Extracurrculars: 27 Tuition & acceptance rate listed
High Bluff Academy
High Bluff Academy Photo
(6)
5531 Cancha de Golf, Ste 202
Rancho Santa Fe, CA 92091
(858) 509-9101
Gr: 9-12 | 72 students Avg. class size: 8 students Tuition listed
Immaculate Heart Middle & High School
Immaculate Heart Middle & High School Photo - Immaculate Heart Middle & High School students engage on campus.
All-girls (Catholic)
(4)
5515 Franklin Ave
Los Angeles, CA 90028
(323) 461-3651
Gr: 6-12 | 687 students Avg. class size: 16 students Sports: 14 Tuition listed
Laurel Springs School
Laurel Springs School Photo
(6)
302 El Paseo Road
Ojai, CA 93023
(866) 702-4777
Gr: K-12 | 2,210 students Avg. class size: 20 students Extracurrculars: 41 Tuition & acceptance rate listed
Le Lycee Francais de Los Angeles
Le Lycee Francais de Los Angeles Photo - Homecoming!
(5)
3261 Overland Avenue
Los Angeles, CA 90034
(310) 836-3464
Gr: NS-12 | 734 students Avg. class size: 18 students Sports: 8 | Extracurrculars: 20 Tuition listed
Louisville High School
Louisville High School Photo
All-girls (Catholic)
(19)
22300 Mulholland Drive
Woodland Hills, CA 91364
(818) 346-8812
Gr: 9-12 | 343 students Avg. class size: 16 students Sports: 11 | Extracurrculars: 28 Tuition listed
Lycee Francais de San Francisco
Lycee Francais de San Francisco Photo - The Middle School and High School campus features a climbing wall bringing students to new heights!
1201 Ortega Street, San Francisco, CA, USA
San Francisco, CA 94122
(415) 661-5232
Gr: 6-12 Tuition & acceptance rate listed
Marin Christian Academy
Marin Christian Academy Photo - Kindergarten celebrating Thanksgiving
Alternative School (Assembly of God)
1370 S Novato Blvd
Novato, CA 94947
(415) 892-5713
Gr: NS-12 | 268 students Avg. class size: 15 students Sports: 5 | Extracurrculars: 8 Tuition listed
Mayfield Senior School
Mayfield Senior School Photo
All-girls (Catholic)
(2)
500 Bellefontaine St
Pasadena, CA 91105
(626) 799-9121
Gr: 9-12 | 304 students Avg. class size: 16 students Sports: 14 | Extracurrculars: 11 Tuition listed
Oakwood School
Oakwood School Photo
(4)
11230 Moorpark Street/11600 Magnolia Blvd
North Hollywood, CA 91602
(818) 732-3150
Gr: K-12 | 822 students Avg. class size: 15 students Sports: 21 | Extracurrculars: 45 Tuition & acceptance rate listed
Orion International Academy
Orion International Academy Photo - Cross-Country Team
11255 Central Ave.
Ontario, CA 91762
(909) 999-0025
Gr: PK-12 | 218 students Avg. class size: 12 students Sports: 8 | Extracurrculars: 5 Tuition & acceptance rate listed
Pacific Academy
Pacific Academy Photo - Rose Zhang, Class of 2021; AJGA World No. 1 Women Amateur Golfer; 2020 U.S Woman's Amateur Champion; Stanford University
(9)
4947 Alton Pkwy.
Irvine, CA 92604
(949) 398-5288
Gr: K-12 | 164 students Avg. class size: 10 students Sports: 5 | Extracurrculars: 25 Tuition & acceptance rate listed
Pacific Ridge School
Pacific Ridge School Photo - HARKNESS LEARNING: Students build critical communication skills and critical thinking through student-centered discussion-based learning.
(6)
6269 El Fuerte St
Carlsbad, CA 92009
(760) 448-9820
Gr: 6-12 | 695 students Avg. class size: 15 students Sports: 16 | Extracurrculars: 47 Tuition & acceptance rate listed
Palma School
Palma School Photo - Palma is a college-preparatory, Catholic co-ed high school with an all-boy junior high school (grades 6-8) owned and operated by The Christian Brothers Institute of California.
All-boys (Catholic)
919 Iverson St
Salinas, CA 93901
(831) 422-6391
Gr: 6-12 Avg. class size: 15 students Sports: 18 | Extracurrculars: 15 Tuition listed
Palo Alto Preparatory School
Palo Alto Preparatory School Photo - Our classes have an average student-to-teacher ratio of 8:1. This means students receive individualized support from teachers who have the time to teach to their students' specific learning needs.
(1)
2462 Wyandotte Street
Mountain View, CA 94043
(650) 493-7071
Gr: 8-12 | 65 students Avg. class size: 8 students Extracurrculars: 4 Tuition & acceptance rate listed
Qualia: The School for Deeper Learning
Qualia: The School for Deeper Learning Photo - Provocative, hands-on teaching, highlighting puzzles, mysteries, controversies and quandaries, is crucial to our deeper learning model.
(10)
4345 Las Virgenes Road
Calabasas, CA 91302
(310) 478-9900
Gr: 4-12 | 40 students Avg. class size: 5 students Tuition & acceptance rate listed
Sacramento Country Day School
Sacramento Country Day School Photo - With low student-teacher ratios, Sacramento Country Day School offers a highly-personalized educational experience that challenges students to innovate, and explore in a flexible academic program.
2636 Latham Drive
Sacramento, CA 95864
(916) 481-8811
Gr: PK-12 | 594 students Avg. class size: 15 students Sports: 12 | Extracurrculars: 10 Tuition & acceptance rate listed
St. Jeanne De Lestonnac School
St. Jeanne De Lestonnac School Photo - Saint Jeanne de Lestonnac Catholic School educates students from preschool through high school.
(Catholic)
(19)
32650 Avenida Lestonnac
Temecula, CA 92592
(951) 587-2505
Gr: PK-12 | 707 students Avg. class size: 24 students Sports: 13 | Extracurrculars: 15 Tuition & acceptance rate listed
San Domenico School
San Domenico School Photo
(15)
1500 Butterfield Road
San Anselmo, CA 94960
(415) 258-1900
Gr: K-12 | 680 students Avg. class size: 18 students Sports: 16 | Extracurrculars: 30
San Francisco Waldorf High School
San Francisco Waldorf High School Photo
(2)
470 West Portal Ave.
San Francisco, CA 94127
(415) 431-2736
Gr: 9-12 | 127 students Avg. class size: 18 students Sports: 5 | Extracurrculars: 23 Tuition & acceptance rate listed
Stratford Preparatory Blackford
Stratford Preparatory Blackford Photo
(1)
3800 Blackford Avenue
San Jose, CA 95117
(408) 521-1170
Gr: 6-10 | 820 students Avg. class size: 15 students Sports: 8 | Extracurrculars: 18 Tuition listed
TCS
TCS 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.
(10)
548 Market Street, No 41193
San Francisco, CA 94104
(415) 938-4934
Gr: K-12 | 43 students Avg. class size: 1 student Tuition & acceptance rate listed
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