For the 2026-27 school year, there are 2 college-prep and junior boarding schools serving 745 students located throughout Illinois.
You can also browse our full boarding school directory or specify additional search criteria.
Historical Statistics Overview
This State (IL)
US
# Schools
2 Schools
270 Schools
# Students
745 Students
106,591 Students
Academics and Faculty
This State (IL)
US
Average Student-Teacher Ratio
n/a
8:1
% Faculty with Advanced Degree
n/a
69%
Academic Programs
This State (IL)
US
Avg. AP Courses
n/a
22
Avg. IB Courses
n/a
28
Avg. Class Size
n/a
13
Academic Performance
This State (IL)
US
Avg. SAT Score
n/a
1270
Avg. ACT Score
n/a
27
Avg. Acceptance Rate
n/a
59%
Tuition and Finances
This State (IL)
US
Avg. Tuition (Boarding)
n/a
$64,477
Avg. Tuition (Day)
n/a
$38,040
Avg. Tuition (International)
n/a
$62,455
Avg. Financial Aid Rate
n/a
42%
Avg. Financial Aid Grant
n/a
$26,973
Avg. Endowment
n/a
$83 MM
Student Diversity
This State (IL)
US
% Students of Color
n/a
30%
% International Students
n/a
27%
% Boarding Students
n/a
59%
Top Illinois Boarding Schools (2026-27)
School
Location
Quick Facts
1500 West Kennedy Road
Lake Forest, IL 60045
(847) 615-3267
Lake Forest, IL 60045
(847) 615-3267
Gr: 9-12, PG | 452 students Student-teacher ratio: 6:1 Avg. class size: 12 students Acceptance rate: 34% Tuition listed
Saint Bede Academy ![Saint Bede Academy Photo - With an average student population of 300, our small class sizes offer students one-on-one interaction with their instructors.]( "Saint Bede Academy Photo - With an average student population of 300, our small class sizes offer students one-on-one interaction with their instructors.")
(Catholic)
24 W US Highway 6
Peru, IL 61354
(815) 250-0285
Peru, IL 61354
(815) 250-0285
Gr: 9-12 | 293 students Student-teacher ratio: 12:1 Avg. class size: 18 students Acceptance rate: 80% Tuition listed
Frequently Asked Questions
How many boarding schools are located in Illinois?
There are 2 college-preparatory boarding schools located in Illinois.
What is the oldest boarding school in Illinois?
Lake Forest Academy, founded in 1857, is the oldest boarding school in Illinois.
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