The Webb Schools Top 3 · Highest Avg. SAT Score (CA)

BASIS Independent Silicon Valley Upper School Top 3 · Highest Avg. ACT Score (CA)

Qualia: The School for Deeper Learning Top 22 · Lowest Acceptance Rate (CA)

Home > California

California Private High Schools Belonging to National Association of Independent Schools (NAIS)

For the 2026-27 school year, there are 139 private high schools belonging to National Association of Independent Schools (NAIS) serving 72,761 students in California. You can also find more schools membership associations in California.

The private high schools belonging to National Association of Independent Schools (NAIS) in California include The Webb Schools, BASIS Independent Fremont Lower School, and The Branson School.

The average tuition cost is $44,641, which is higher than the California private high school average tuition cost of $23,667.

22% of private high schools belonging to National Association of Independent Schools (NAIS) in California are religiously affiliated (most commonly Catholic and Jewish).

Quick Facts (26-27)

# Private Schools: 139

Quick Facts (26-27)

# Private Schools: 139

Frequently Asked Questions

What are the top ranked private high schools belonging to National Association of Independent Schools (NAIS) in California?

The private high schools belonging to National Association of Independent Schools (NAIS) in California include The Webb Schools, BASIS Independent Fremont Lower School, and The Branson School.

How many private high schools belonging to National Association of Independent Schools (NAIS) are located in California?

139 private high schools belonging to National Association of Independent Schools (NAIS) are located in California.

How much do private high schools belonging to National Association of Independent Schools (NAIS) cost in California?

The average tuition cost is $44,641, which is higher than the California private school average tuition cost of $23,667.

How diverse are private high schools belonging to National Association of Independent Schools (NAIS) in California?

California private high schools belonging to National Association of Independent Schools (NAIS) are approximately 46% minority students, which is lower than the California private school average of 50%.

What percentage of private high schools belonging to National Association of Independent Schools (NAIS) are religiously affiliated in California?

22% of private high schools belonging to National Association of Independent Schools (NAIS) in California are religiously affiliated (most commonly Catholic and Jewish).

California Private High Schools Belonging to National Association of Independent Schools (NAIS) Trends

139

Private Schools

72,761

Students

$44,641

Avg. Tuition

46%

Students of Color

8:1

Student-Teacher Ratio

Recent Articles

Can Private Schools Raise Fees After You Sign?

November 03, 2026

Can Private Schools Raise Fees After You Sign?

Can private schools increase mandatory fees after enrollment contracts are signed? Learn how contract terms, fee disclosures, state laws, and parent rights affect unexpected charges and available options.

Financial Aid When a Sibling Graduates Private School

November 03, 2026

Financial Aid When a Sibling Graduates Private School

Learn how private school financial aid may change when an older sibling graduates, including revised family contributions, sibling discounts, college expenses, renewal decisions, and practical steps to protect affordability.

Private School Expansion: Preserving School Culture

November 03, 2026

Private School Expansion: Preserving School Culture

Discover how growing private schools can expand enrollment while preserving small classes, personal attention, strong relationships, and school culture, plus essential questions parents should ask before choosing a school.

Quick Links

SCHOOL SEARCH TOOLS:

SCHOOL BY TYPE (CA):

OPEN-HOUSES & JOBS:

PUBLIC & BOARDING SCHOOLS:

PRIVATE SCHOOL DATA:

Most Popular Articles

Private School Governance Structures Explained

Private School Governance Structures Explained

Private School vs Public School: Key Differences (2026 Guide)

Private School vs Public School: Key Differences (2026 Guide)

California Private Schools By Tuition Cost

California Private Schools By Tuition Cost

More Articles

COVID-19
Running a Private School
High School
Jobs in Private Schools
Archives