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Average Private High School Endowment in California

Name: California Average Endowment Trends (High School)
Creator: Private School Review
License: https://www.privateschoolreview.com/terms

The average private high school endowment in California is $22.9M (2026-27).

The private high school in California with the highest endowment is The Thacher School, with a endowment of $206M.

Quick Facts (26-27)

# CA Schools Ranked: 53
Top 20 Range (Endowment): $13M–$206M
CA School Avg.: $23M
National School Avg.: $30M

Quick Facts (26-27)

# CA Schools Ranked: 53
Top 20 Range (Endowment): $13M–$206M
CA School Avg.: $23M
National School Avg.: $30M

California Average Endowment (Trends)

Total Growth: +86.1% (+$14.1 million since 2018)

View Data

Year	National avg	California (CA) avg	YoY Change ($)	YoY Change (%)
2025	$43 million	$30.4 million	▲ +$5.7 million	▲ +23.3%
2024	$52 million	$24.6 million	▲ +$0.3 million	▲ +1.3%
2023	$51 million	$24.3 million	▼ -$1.3 million	▼ -5.1%
2022	$52 million	$25.6 million	▲ +$0.7 million	▲ +2.8%
2021	$52 million	$24.9 million	▲ +$1.7 million	▲ +7.3%
2020	$51 million	$23.2 million	▼ -$0.3 million	▼ -1.1%
2019	$53 million	$23.5 million	▲ +$7.2 million	▲ +43.9%
2018	$55 million	$16.3 million	—	—

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Source: National Center for Education Statistics (NCES) Private School Universe Survey (PSS), direct school submissions, and proprietary website research and analysis by Private School Review.

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Show school map — California (endowment range: $13M–$206M, avg $23M)

Endowment Range: $5.8M $206M Avg. Endowment: $32.8M

Frequently Asked Questions

What is the California average private high schools endowment?

The California average private high schools endowment is $22.9M for 2026-27.

What are the private high schools with the highest endowment in California?

The top ranked private high schools in California include The Thacher School, The Webb Schools and The Bishop's School.

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