Private School Review - Established 2003
Lake Forest Academy Top 3 · Highest Avg. SAT Score (IL)
North Shore Country Day School Top 3 · Largest Endowment (IL)
Josephinum Academy Of The Sacred Heart Top 7 · Largest Endowment (IL)

Average Private High School Endowment in Illinois

The average private high school endowment in Illinois is $0M (2026-27).
The private high school in Illinois with the highest endowment is Francis W. Parker School, with a endowment of $68M.

Quick Facts (26-27)

  • # IL Schools Ranked: 5
  • Top 20 Range (Endowment): $2M–$68M
  • IL School Avg.: $34M
  • National School Avg.: $30M

Quick Facts (26-27)

  • # IL Schools Ranked: 5
  • Top 20 Range (Endowment): $2M–$68M
  • IL School Avg.: $34M
  • National School Avg.: $30M
Show school map — Illinois (endowment range: $2M–$68M, avg $34M)
Endowment Range: $1.7M $68M Avg. Endowment: $34M

Average Private High School Endowment in Illinois (2026-27)

Showing 5 schools
Map of Francis W. Parker School
#1Francis W. Parker School
Gr: PK-12 | 907 students
Sports: 11
330 W Webster Ave
Chicago, IL 60614
(773) 797-5107
(6)
$68endowment
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Lake Forest Academy Photo
#2Lake Forest Academy
Gr: 9-12 | 452 students
Avg. class size: 12 students
Sports: 15 | Extracurriculars: 25
1500 W Kennedy Rd
Lake Forest, IL 60045
(847) 615-3257
$62endowment
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North Shore Country Day School Photo
#3North Shore Country Day School
Gr: PK-12 | 520 students
Avg. class size: 12 students
Sports: 12 | Extracurriculars: 4
310 Green Bay Rd
Winnetka, IL 60093
(847) 446-0674
$35endowment
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Josephinum Academy Of The Sacred Heart Photo
#4 Josephinum Academy Of The Sacred Heart
Gr: 9-12 | 132 students
Avg. class size: 12 students
Sports: 7 | Extracurriculars: 20
All-girls (Catholic)
1501 North Oakley Boulevard
Chicago, IL 60622
(773) 276-1261
$3endowment
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Rockford Lutheran School Photo
#5Rockford Lutheran School
Gr: PK-12 | 748 students
Avg. class size: 18 students
Sports: 14 | Extracurriculars: 10
Lutheran Church Missouri Synod
3411 N Alpine Rd
Rockford, IL 61114
(815) 877-9551
(2)
$2endowment
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Frequently Asked Questions

What are the private high schools with the highest endowment in Illinois?
The top ranked private high schools in Illinois include Francis W. Parker School, Lake Forest Academy and North Shore Country Day School.

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