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Average Private School Endowment in Illinois

Name: Illinois Average Endowment Trends (All Private Schools)
Creator: Private School Review
License: https://www.privateschoolreview.com/terms

The average private school endowment in Illinois is $12.3M (2026-27).

The private school in Illinois with the highest endowment is Francis W. Parker School, with a endowment of $68M.

Quick Facts (26-27)

# IL Schools Ranked: 12
Top 20 Range (Endowment): $1M–$68M
IL School Avg.: $19M
National School Avg.: $24M

Quick Facts (26-27)

# IL Schools Ranked: 12
Top 20 Range (Endowment): $1M–$68M
IL School Avg.: $19M
National School Avg.: $24M

Illinois Average Endowment (Trends)

Total Growth: (-3.9%) (-$0.6 million since 2024)

View Data

Year	National avg	Illinois (IL) avg	YoY Change ($)	YoY Change (%)
2025	$40 million	$14.1 million	▼ -$0.6 million	▼ -3.9%
2024	$39 million	$14.7 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 — Illinois (endowment range: $1M–$68M, avg $19M)

Endowment Range: $1M $68M Avg. Endowment: $18.6M

Frequently Asked Questions

What is the Illinois average private schools endowment?

The Illinois average private schools endowment is $12.3M for 2026-27.

What are the private schools with the highest endowment in Illinois?

The top ranked private schools in Illinois include Francis W. Parker School, Lake Forest Academy and North Shore Country Day School.

What is private high school and private elementary school with the highest endowment in Illinois?

The private high school with the highest endowment in Illinois is Francis W. Parker School, with a value of $68.0M. The private elementary school with the highest endowment is Francis W. Parker School, with a value of $68.0M.

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