The average private high school endowment in Illinois is $58.1M (2025-26).
The private high school in Illinois with the highest endowment is Schaumburg Christian School, with a endowment of $500M.
Endowment Range: $1.7M
$500M
Avg. Endowment: $58.1M
Average Private High School endowment in Illinois (2025-26)
School
Endowment
Grades
Location
Rank: #11.
Endowment: $500 M
Grades: PK-12
200 N Roselle Road
Schaumburg, IL 60194
(847) 885-3230
Schaumburg, IL 60194
(847) 885-3230
Rank: #22.
Endowment: $69 M
Grades: 9-12
1500 W Kennedy Rd
Lake Forest, IL 60045
(847) 615-3257
Lake Forest, IL 60045
(847) 615-3257
Rank: #3 - 163. - 16.
Bishop Mcnamara Catholic High School
(Catholic)
Endowment: $50 M
Grades: PK-12
550 W Brookmont Blvd
Kankakee, IL 60901
(815) 932-7413
Kankakee, IL 60901
(815) 932-7413
Rank: #3 - 163. - 16.
Brightmont Academy - Naperville![Brightmont Academy - Naperville Photo - one teacher one student]( "Brightmont Academy - Naperville Photo - one teacher one student")
Special Program Emphasis
Endowment: $50 M
Grades: 1-12
445 Jackson Ave.
Naperville, IL 60540
(331) 260-0334
Naperville, IL 60540
(331) 260-0334
Rank: #3 - 163. - 16.
Christian Life Academy
(Christian)
Endowment: $50 M
Grades: PK-12
222 Tremont Street
Hopedale, IL 61747
(309) 449-3346
Hopedale, IL 61747
(309) 449-3346
Rank: #3 - 163. - 16.
Danville Christian Academy
(Assembly of God)
Endowment: $50 M
Grades: PK-11
428 N Walnut St
Danville, IL 61832
(217) 442-1579
Danville, IL 61832
(217) 442-1579
Rank: #3 - 163. - 16.
Ezra Christian School
(Christian)
Endowment: $50 M
Grades: K-12
1345 Ezra St
West Frankfort, IL 62896
(618) 932-6988
West Frankfort, IL 62896
(618) 932-6988
Rank: #3 - 163. - 16.
Endowment: $50 M
Grades: PK-12
330 W Webster Ave
Chicago, IL 60614
(773) 797-5501
Chicago, IL 60614
(773) 797-5501
Rank: #3 - 163. - 16.
The High School Of Saint Thomas More![The High School Of Saint Thomas More Photo - STM chaplain Father Andru O'Brien celebrates the Senior Recognition Mass in May 2022.]( "The High School Of Saint Thomas More Photo - STM chaplain Father Andru O'Brien celebrates the Senior Recognition Mass in May 2022.")
(Catholic)
Endowment: $50 M
Grades: 9-12
3901 N Mattis Ave
Champaign, IL 61822
(217) 352-7201
Champaign, IL 61822
(217) 352-7201
Rank: #3 - 163. - 16.
Joseph Academy-melrose Park
Special Education School
Endowment: $50 M
Grades: 4-12
1100 N 22nd Av
Melrose Park, IL 60160
(708) 345-4500
Melrose Park, IL 60160
(708) 345-4500
Rank: #3 - 163. - 16.
Kiefer School
Special Education School
Endowment: $50 M
Grades: 1-12
404 NE Madison
Peoria, IL 61603
(309) 687-7236
Peoria, IL 61603
(309) 687-7236
Rank: #3 - 163. - 16.
Misericordia South
Special Education School
Endowment: $50 M
Grades: PK-12
2916 W 47th Street
Chicago, IL 60632
(773) 254-9595
Chicago, IL 60632
(773) 254-9595
Rank: #3 - 163. - 16.
Montessori Academy Of North Hoffman
Montessori School
Endowment: $50 M
Grades: PK-12
1200 Freeman Road
Hoffman Estates, IL 60192
(847) 705-1234
Hoffman Estates, IL 60192
(847) 705-1234
Rank: #3 - 163. - 16.
Endowment: $50 M
Grades: K-12
409 W Orange St
Pana, IL 62557
(618) 267-7581
Pana, IL 62557
(618) 267-7581
Rank: #3 - 163. - 16.
Endowment: $50 M
Grades: 9-12
701 Locust Road
Wilmette, IL 60091
(847) 256-7660
Wilmette, IL 60091
(847) 256-7660
Rank: #3 - 163. - 16.
St. Mary's School
(Catholic)
Endowment: $50 M
Grades: 7-9
1015 Milton Rd
Alton, IL 62002
(618) 465-9719
Alton, IL 62002
(618) 465-9719
Rank: #1717.
Endowment: $35 M
Grades: PK-12
310 Green Bay Rd
Winnetka, IL 60093
(847) 446-0674
Winnetka, IL 60093
(847) 446-0674
Rank: #1818.
Benet Academy
(Catholic)
Endowment: $20 M
Grades: 9-12
2200 Maple Ave
Lisle, IL 60532
(630) 719-2782
Lisle, IL 60532
(630) 719-2782
Rank: #1919.
Unity Christian Elementary School
(Christian)
Endowment: $4 M
Grades: K-12
1000 11th Ave
Fulton, IL 61252
(815) 589-3912
Fulton, IL 61252
(815) 589-3912
Rank: #2020.
Josephinum Academy Of The Sacred Heart![Josephinum Academy Of The Sacred Heart Photo - Library]( "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
Chicago, IL 60622
(773) 276-1261
Rank: #21 - 2221. - 22.
St. Viator High School
(Catholic)
Endowment: $2 M
Grades: 9-12
1213 E Oakton St
Arlington Heights, IL 60004
(847) 392-4050
Arlington Heights, IL 60004
(847) 392-4050
Rank: #21 - 2221. - 22.
Endowment: $2 M
Grades: PK-12
2700 W Highland Avenue
Elgin, IL 60124
(847) 695-0310
Elgin, IL 60124
(847) 695-0310
Rank: #2323.
Endowment: $1.7 M
Grades: PK-12
3411 N Alpine Rd
Rockford, IL 61114
(815) 877-9551
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 $58.1M for 2025-26.
What are the private high schools with the highest endowment in Illinois?
The top ranked private high schools in Illinois include Schaumburg Christian School, Lake Forest Academy and Bishop Mcnamara Catholic High School.
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