North Shore Country Day School Photo

Average Private High School endowment in Illinois

The average private high school endowment in Illinois is $27.1M (2025).
The private high school in Illinois with the highest endowment is Lake Forest Academy, with a endowment of $69M.
Endowment Range: $1.7M $69M Avg. Endowment: $27.1M

Average Private High School endowment in Illinois (2025)

School
Endowment
Grades
Location
Rank: #11.
Lake Forest Academy
Lake Forest Academy Photo - Located on the former estate of J. Odgen Armour, various historical and modern buildings comprise Lake Forest Academy's 150-acre campus, including the Cressey Center for the Arts, the Reyes Family Science Center, and a newly expanded athletic center.
Endowment: $69 M
Grades: 9-12
1500 W Kennedy Rd
Lake Forest, IL 60045
(847) 615-3257
Rank: #22.
Endowment: $35 M
Grades: PK-12
310 Green Bay Rd
Winnetka, IL 60093
(847) 446-0674
Rank: #33.
Josephinum Academy Of The Sacred Heart
Josephinum Academy Of The Sacred Heart Photo - Library
All-girls (Catholic)
Endowment: $3.3 M
Grades: 9-12
1501 North Oakley Boulevard
Chicago, IL 60622
(773) 276-1261
Rank: #44.
Rockford Lutheran School
Rockford Lutheran School Photo - Junior High Orchestra
(Lutheran Church Missouri Synod)
(2)
Endowment: $1.7 M
Grades: PK-12
3411 N Alpine Rd
Rockford, IL 61114
(815) 877-9551

Frequently Asked Questions

What is the Illinois average private high schools endowment?
The Illinois average private high schools endowment is $27.1M for 2025.
What are the private high schools with the highest endowment in Illinois?
The top ranked private high schools in Illinois include Lake Forest Academy, North Shore Country Day School and Josephinum Academy Of The Sacred Heart.

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