The average public school in Illinois has approximately 490 students (2025).
The public schools with the largest student enrollments are listed below (where sufficient data available).
The largest public school in Illinois (by enrollment) is test 1239 with 36,314 students.
# Students Range: 2,657
36,314
Avg. # Students: 4,235
Largest Illinois Public Schools (2025)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
# Students
Grades
Location
Rank: #22.
Adlai E Stevenson High School
(Math: 72% | Reading: 72%)
Rank:
Rank:
10/
Top 1%10
Students: 4,614
Grades: 9-12
1 Stevenson Dr
Lincolnshire, IL 60069
(847) 415-4000
Lincolnshire, IL 60069
(847) 415-4000
Rank: #33.
Lane Technical High School
(Math: 82% | Reading: 87%)
Rank:
Rank:
10/
Top 1%10
Students: 4,525
Grades: 7-12
2501 W Addison St
Chicago, IL 60618
(773) 534-5400
Chicago, IL 60618
(773) 534-5400
Rank: #44.
Taft High School
(Math: 25% | Reading: 32%)
Rank:
Rank:
7/
Top 50%10
Students: 4,416
Grades: 7-12
6530 W Bryn Mawr Ave
Chicago, IL 60631
(773) 534-1000
Chicago, IL 60631
(773) 534-1000
Rank: #55.
Waukegan High School
(Math: 5% | Reading: 7%)
Rank:
Rank:
1/
Bottom 50%10
Students: 4,325
Grades: 9-12
1011 Washington St
Waukegan, IL 60085
(224) 303-3000
Waukegan, IL 60085
(224) 303-3000
Rank: #66.
East High School
(Math: 8% | Reading: 8%)
Rank:
Rank:
2/
Bottom 50%10
Students: 4,019
Grades: 9-12
500 Tomcat Ln
Aurora, IL 60505
(630) 299-8000
Aurora, IL 60505
(630) 299-8000
Rank: #77.
Lockport Township High Sch East
(Math: 35% | Reading: 33%)
Rank:
Rank:
8/
Top 30%10
Students: 3,817
Grades: 9-12
1333 E 7th St
Lockport, IL 60441
(815) 588-8300
Lockport, IL 60441
(815) 588-8300
Rank: #88.
Lyons Twp High School
(Math: 49% | Reading: 49%)
Rank:
Rank:
9/
Top 20%10
Students: 3,767
Grades: 9-12
100 S Brainard Ave
La Grange, IL 60525
(708) 579-6300
La Grange, IL 60525
(708) 579-6300
Rank: #99.
Warren Township High School
(Math: 34% | Reading: 32%)
Rank:
Rank:
8/
Top 30%10
Students: 3,687
Grades: 9-12
34090 N Almond Rd
Gurnee, IL 60031
(847) 548-6611
Gurnee, IL 60031
(847) 548-6611
Rank: #1010.
West Aurora High School
(Math: 19% | Reading: 19%)
Rank:
Rank:
4/
Bottom 50%10
Students: 3,655
Grades: 9-12
1201 W New York St
Aurora, IL 60506
(630) 301-5600
Aurora, IL 60506
(630) 301-5600
Rank: #1111.
Evanston Twp High School
(Math: 47% | Reading: 48%)
Rank:
Rank:
9/
Top 20%10
Students: 3,586
Grades: 9-12
1600 Dodge Ave
Evanston, IL 60201
(847) 424-7200
Evanston, IL 60201
(847) 424-7200
Rank: #1212.
J Sterling Morton West High School
(Math: 11% | Reading: 16%)
Rank:
Rank:
3/
Bottom 50%10
Students: 3,497
Grades: 9-12
2400 Home Ave
Berwyn, IL 60402
(708) 780-4100
Berwyn, IL 60402
(708) 780-4100
Rank: #1313.
J Sterling Morton East High School
(Math: 7% | Reading: 10%)
Rank:
Rank:
2/
Bottom 50%10
Students: 3,474
Grades: 10-12
2423 S Austin Blvd
Cicero, IL 60804
(708) 780-4000
Cicero, IL 60804
(708) 780-4000
Rank: #1414.
Joliet West High School
(Math: 19% | Reading: 21%)
Rank:
Rank:
5/
Bottom 50%10
Students: 3,436
Grades: 9-12
401 N Larkin Ave
Joliet, IL 60435
(815) 727-6940
Joliet, IL 60435
(815) 727-6940
Rank: #1515.
Joliet Central High School
(Math: 12% | Reading: 14%)
Rank:
Rank:
3/
Bottom 50%10
Students: 3,383
Grades: 9-12
201 E Jefferson St
Joliet, IL 60432
(815) 727-6740
Joliet, IL 60432
(815) 727-6740
Rank: #1616.
Bolingbrook High School
(Math: 23% | Reading: 22%)
Rank:
Rank:
6/
Top 50%10
Students: 3,371
Grades: 9-12
365 Raider Way
Bolingbrook, IL 60440
(630) 759-6400
Bolingbrook, IL 60440
(630) 759-6400
Rank: #1717.
Oak Park & River Forest High School
(Math: 52% | Reading: 57%)
Rank:
Rank:
10/
Top 10%10
Students: 3,256
Grades: 9-12
201 N Scoville Ave
Oak Park, IL 60302
(708) 383-0700
Oak Park, IL 60302
(708) 383-0700
Rank: #1818.
Curie Metropolitan High School
(Math: 9% | Reading: 10%)
Rank:
Rank:
2/
Bottom 50%10
Students: 3,136
Grades: 9-12
4959 S Archer Ave
Chicago, IL 60632
(773) 535-2100
Chicago, IL 60632
(773) 535-2100
Rank: #1919.
Glenbrook South High School
(Math: 60% | Reading: 59%)
Rank:
Rank:
10/
Top 5%10
Students: 3,015
Grades: 9-12
4000 W Lake Ave
Glenview, IL 60026
(847) 729-2000
Glenview, IL 60026
(847) 729-2000
Rank: #2020.
Neuqua Valley High School
(Math: 63% | Reading: 68%)
Rank:
Rank:
10/
Top 5%10
Students: 3,008
Grades: 9-12
2360 95th St
Naperville, IL 60564
(630) 428-6000
Naperville, IL 60564
(630) 428-6000
Rank: #2121.
Minooka Community High School
(Math: 28% | Reading: 34%)
Rank:
Rank:
7/
Top 50%10
Students: 2,985
Grades: 9-12
301 S Wabena Ave
Minooka, IL 60447
(815) 467-2140
Minooka, IL 60447
(815) 467-2140
Rank: #2222.
Carl Sandburg High School
(Math: 41% | Reading: 42%)
Rank:
Rank:
9/
Top 20%10
Students: 2,906
Grades: 9-12
13300 S La Grange Rd
Orland Park, IL 60462
(708) 671-3100
Orland Park, IL 60462
(708) 671-3100
Rank: #2323.
Oswego High School
(Math: 29% | Reading: 33%)
Rank:
Rank:
7/
Top 50%10
Students: 2,866
Grades: 9-12
4250 State Route 71
Oswego, IL 60543
(630) 636-2000
Oswego, IL 60543
(630) 636-2000
Rank: #2424.
Huntley High School
(Math: 45% | Reading: 46%)
Rank:
Rank:
9/
Top 20%10
Students: 2,856
Grades: 9-12
13719 Harmony Rd
Huntley, IL 60142
(847) 659-6600
Huntley, IL 60142
(847) 659-6600
Rank: #2525.
Metea Valley High School
(Math: 53% | Reading: 51%)
Rank:
Rank:
10/
Top 10%10
Students: 2,807
Grades: 9-12
1801 N Eola Rd
Aurora, IL 60502
(630) 375-5900
Aurora, IL 60502
(630) 375-5900
Rank: #26 - 2726. - 27.
Homewood-flossmoor High School
(Math: 21% | Reading: 24%)
Rank:
Rank:
5/
Bottom 50%10
Students: 2,805
Grades: 9-12
999 Kedzie Ave
Flossmoor, IL 60422
(708) 799-3000
Flossmoor, IL 60422
(708) 799-3000
Rank: #26 - 2726. - 27.
Oswego East High School
(Math: 35% | Reading: 38%)
Rank:
Rank:
8/
Top 30%10
Students: 2,805
Grades: 9-12
1525 Harvey Rd
Oswego, IL 60543
(630) 636-2200
Oswego, IL 60543
(630) 636-2200
Rank: #2828.
New Trier Township H S Winnetka
(Math: 76% | Reading: 71%)
Rank:
Rank:
10/
Top 1%10
Students: 2,792
Grades: 10-12
385 Winnetka Ave
Winnetka, IL 60093
(847) 446-7000
Winnetka, IL 60093
(847) 446-7000
Rank: #2929.
Waubonsie Valley High School
(Math: 47% | Reading: 49%)
Rank:
Rank:
9/
Top 20%10
Students: 2,781
Grades: 9-12
2590 Ogden Ave
Aurora, IL 60504
(630) 375-3300
Aurora, IL 60504
(630) 375-3300
Rank: #3030.
South Elgin High School
(Math: 32% | Reading: 30%)
Rank:
Rank:
7/
Top 50%10
Students: 2,770
Grades: 9-12
760 E Main St
South Elgin, IL 60177
(847) 289-3760
South Elgin, IL 60177
(847) 289-3760
Rank: #3131.
Barrington High School
(Math: 61% | Reading: 54%)
Rank:
Rank:
10/
Top 10%10
Students: 2,759
Grades: 9-12
616 W Main St
Barrington, IL 60010
(847) 381-1400
Barrington, IL 60010
(847) 381-1400
Rank: #3232.
Lincoln-way East High School
(Math: 46% | Reading: 52%)
Rank:
Rank:
10/
Top 10%10
Students: 2,728
Grades: 9-12
201 Colorado Ave
Frankfort, IL 60423
(815) 464-4130
Frankfort, IL 60423
(815) 464-4130
Rank: #3333.
Elgin High School
(Math: 14% | Reading: 11%)
Rank:
Rank:
3/
Bottom 50%10
Students: 2,724
Grades: 9-12
1200 Maroon Dr
Elgin, IL 60120
(847) 888-5100
Elgin, IL 60120
(847) 888-5100
Rank: #3434.
York Comm High School
(Math: 54% | Reading: 52%)
Rank:
Rank:
10/
Top 10%10
Students: 2,677
Grades: 9-12
355 W Saint Charles Rd
Elmhurst, IL 60126
(630) 617-2400
Elmhurst, IL 60126
(630) 617-2400
Rank: #3535.
Wm Fremd High School
(Math: 59% | Reading: 60%)
Rank:
Rank:
10/
Top 5%10
Students: 2,657
Grades: 9-12
1000 S Quentin Rd
Palatine, IL 60067
(847) 755-2610
Palatine, IL 60067
(847) 755-2610
Show 100 more public schools in IL (out of 3,842 total schools)
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Frequently Asked Questions
What is the Illinois average public schools student size?
The Illinois average public schools student size is 490 for 2025.
What are the public schools with the largest student size in Illinois?
The best top ranked public schools in Illinois include test 1239, Adlai E Stevenson High School and Lane Technical High School.
What is public high school and public elementary school with the largest student size in Illinois?
The public high school with the largest student size in Illinois is Adlai E Stevenson High School, with a value of 4,614. The public elementary school with the largest student size is test 1239, with a value of 36,314.
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