The average private high school in Illinois has 250 students (2024).
The largest private high school in Illinois is American School with 6,319 students.
School Size Range: 660
6,319
Avg. School Size: 1,164
Largest Illinois Private High Schools (2024)
School
# Students
Grades
Location
Rank: #11.
American School
Alternative School
Students: 6,319
Grades: 6-12
2200 E 170th St
Lansing, IL 60438
(708) 418-2800
Lansing, IL 60438
(708) 418-2800
Rank: #22.
Students: 2,224
Grades: PK-12
1362 E 59th Street
Chicago, IL 60637
(773) 702-9450
Chicago, IL 60637
(773) 702-9450
Rank: #33.
Students: 2,072
Grades: 9-12
1100 Laramie Ave
Wilmette, IL 60091
(847) 256-1100
Wilmette, IL 60091
(847) 256-1100
Rank: #44.
One World School- Llc
Alternative School (Christian)
Students: 1,914
Grades: 6-12
747 18th Ave
East Moline, IL 61244
(309) 738-0265
East Moline, IL 61244
(309) 738-0265
Rank: #55.
Marist High School
(Catholic)
Students: 1,780
Grades: 9-12
4200 W 115th St
Chicago, IL 60655
(773) 881-5300
Chicago, IL 60655
(773) 881-5300
Rank: #66.
St. Ignatius College Prep
(Catholic)
Students: 1,373
Grades: 9-12
1076 West Roosevelt Road
Chicago, IL 60608
(312) 421-5900
Chicago, IL 60608
(312) 421-5900
Rank: #77.
Benet Academy
(Catholic)
Students: 1,330
Grades: 9-12
2200 Maple Ave
Lisle, IL 60532
(630) 719-2782
Lisle, IL 60532
(630) 719-2782
Rank: #88.
Students: 1,261
Grades: PK-12
188 W Butterfield Rd
Elmhurst, IL 60126
(630) 833-4616
Elmhurst, IL 60126
(630) 833-4616
Rank: #99.
Students: 1,137
Grades: PK-12
59 W North Blvd
Chicago, IL 60610
(312) 582-6000
Chicago, IL 60610
(312) 582-6000
Rank: #1010.
Fenwick High School
(Catholic)
Students: 1,135
Grades: 9-12
505 Washington Blvd
Oak Park, IL 60302
(708) 386-0127
Oak Park, IL 60302
(708) 386-0127
Rank: #1111.
Students: 1,107
Grades: 9-12
1 Carmel Pkwy
Mundelein, IL 60060
(847) 566-3000
Mundelein, IL 60060
(847) 566-3000
Rank: #1212.
Students: 1,099
Grades: PK-12
1531 N Dearborn Pkwy
Chicago, IL 60610
(312) 582-6479
Chicago, IL 60610
(312) 582-6479
Rank: #1313.
Students: 1,015
Grades: 9-12
5900 W Belmont Avenue
Chicago, IL 60634
(773) 282-8844
Chicago, IL 60634
(773) 282-8844
Rank: #1414.
Students: 967
Grades: PK-12
1401 N Bell School Road
Rockford, IL 61107
(815) 391-8000
Rockford, IL 61107
(815) 391-8000
Rank: #1515.
Students: 907
Grades: PK-12
330 W Webster Ave
Chicago, IL 60614
(773) 797-5501
Chicago, IL 60614
(773) 797-5501
Rank: #1616.
Mother Mcauley Liberal Arts High School
All-girls (Catholic)
Students: 876
Grades: 9-12
3737 W 99th Street
Chicago, IL 60655
(773) 881-6507
Chicago, IL 60655
(773) 881-6507
Rank: #1717.
St. Viator High School
(Catholic)
Students: 871
Grades: 9-12
1213 E Oakton St
Arlington Heights, IL 60004
(847) 392-4050
Arlington Heights, IL 60004
(847) 392-4050
Rank: #1818.
Students: 836
Grades: 9-12
1800 W Lincoln Hwy
New Lenox, IL 60451
(815) 717-3179
New Lenox, IL 60451
(815) 717-3179
Rank: #1919.
Students: 819
Grades: 9-12
700 Ashland Ave
Chicago Heights, IL 60411
(708) 755-7565
Chicago Heights, IL 60411
(708) 755-7565
Rank: #2020.
St. Blase Polish Catholic School
Special Program Emphasis (Catholic)
Students: 817
Grades: PK-12
6101 S 75th Ave
Summit Argo, IL 60501
(708) 458-8772
Summit Argo, IL 60501
(708) 458-8772
Rank: #2121.
Students: 798
Grades: PK-12
5950 Spring Creek Rd
Rockford, IL 61114
(815) 877-2600
Rockford, IL 61114
(815) 877-2600
Rank: #2222.
Students: 786
Grades: PK-12
200 N Roselle Road
Schaumburg, IL 60194
(847) 885-3230
Schaumburg, IL 60194
(847) 885-3230
Rank: #2323.
Students: 777
Grades: PK-12
1929 W. Wilson Avenue
Chicago, IL 60640
(773) 665-0066
Chicago, IL 60640
(773) 665-0066
Rank: #2424.
De La Salle Institute - Institute Campus
(Catholic)
Students: 760
Grades: 9-12
3434 S Michigan Ave
Chicago, IL 60616
(312) 842-7355
Chicago, IL 60616
(312) 842-7355
Rank: #2525.
St. Laurence High School
(Catholic)
Students: 750
Grades: 9-12
5556 W 77th St
Burbank, IL 60459
(708) 458-6900
Burbank, IL 60459
(708) 458-6900
Rank: #2626.
Students: 748
Grades: PK-12
3411 N Alpine Rd
Rockford, IL 61114
(815) 877-9551
Rockford, IL 61114
(815) 877-9551
Rank: #2727.
Nazareth Academy
(Catholic)
Students: 740
Grades: 9-12
1209 West Ogden Avenue
La Grange Park, IL 60526
(708) 354-0061
La Grange Park, IL 60526
(708) 354-0061
Rank: #2828.
St. Francis High School
(Catholic)
Students: 731
Grades: 9-12
2130 W Roosevelt Rd
Wheaton, IL 60187
(630) 668-5800
Wheaton, IL 60187
(630) 668-5800
Rank: #2929.
Students: 728
Grades: 9-12
7655 W Dempster Street
Niles, IL 60714
(847) 965-2900
Niles, IL 60714
(847) 965-2900
Rank: #3030.
Students: 705
Grades: PK-10
8601 Menard Ave
Morton Grove, IL 60053
(224) 534-7638
Morton Grove, IL 60053
(224) 534-7638
Rank: #3131.
Students: 703
Grades: 9-12
5105 N Sheridan Road
Peoria, IL 61614
(309) 691-8741
Peoria, IL 61614
(309) 691-8741
Rank: #3232.
Brother Rice High School - Chicago
All-boys (Catholic)
Students: 671
Grades: 9-12
10001 S Pulaski Rd
Chicago, IL 60655
(773) 429-4300
Chicago, IL 60655
(773) 429-4300
Rank: #3333.
Universal School
(Islamic)
Students: 668
Grades: PK-12
7350 W 93rd St
Bridgeview, IL 60455
(708) 599-4100
Bridgeview, IL 60455
(708) 599-4100
Rank: #3434.
Students: 663
Grades: NS-12
161 West 9th Street
Chicago, IL 60605
(773) 998-2472
Chicago, IL 60605
(773) 998-2472
Rank: #3535.
Wheaton Academy
(Christian)
Students: 660
Grades: 9-12
900 Prince Crossing Rd
West Chicago, IL 60185
(630) 562-7500
West Chicago, IL 60185
(630) 562-7500
Show 100 more private schools in IL (out of 369 total schools)
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Frequently Asked Questions
What is the Illinois average Private High Schools student size?
The Illinois average Private High Schools student size is 250 for 2024.
What are the Private High Schools with the largest student size in Illinois?
The best top ranked Private High Schools in Illinois include American School, University of Chicago Laboratory Schools and Loyola Academy.
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