The average private high school endowment in Illinois is $58.6M (2026).
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: $58.6M
Average Private High School endowment in Illinois (2026)
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: $62 M
Grades: 9-12
1500 W Kennedy Rd
Lake Forest, IL 60045
(847) 615-3257
Lake Forest, IL 60045
(847) 615-3257
Rank: #3 - 143. - 14.
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 - 143. - 14.
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 - 143. - 14.
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 - 143. - 14.
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 - 143. - 14.
Endowment: $50 M
Grades: PK-12
330 W Webster Ave
Chicago, IL 60614
(773) 797-5501
Chicago, IL 60614
(773) 797-5501
Rank: #3 - 143. - 14.
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 - 143. - 14.
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 - 143. - 14.
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 - 143. - 14.
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 - 143. - 14.
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 - 143. - 14.
Endowment: $50 M
Grades: 9-12
701 Locust Road
Wilmette, IL 60091
(847) 256-7660
Wilmette, IL 60091
(847) 256-7660
Rank: #3 - 143. - 14.
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: #1515.
Endowment: $35 M
Grades: PK-12
310 Green Bay Rd
Winnetka, IL 60093
(847) 446-0674
Winnetka, IL 60093
(847) 446-0674
Rank: #1616.
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: #1717.
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: #1818.
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: #19 - 2019. - 20.
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: #19 - 2019. - 20.
Endowment: $2 M
Grades: PK-12
2700 W Highland Avenue
Elgin, IL 60124
(847) 695-0310
Elgin, IL 60124
(847) 695-0310
Rank: #2121.
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 $58.6M for 2026.
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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