The average student-teacher ratio in Illinois public high schools is approximately 15:1 (2026).
Student-Teacher Ratio Range: 1:1
8:1
Avg. Student-Teacher Ratio: 6:1
Student-Teacher Ratio Trends (1988-2025)
Public High Schools Student-Teacher Ratio Statistics in Illinois (2026)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Student-Teacher Ratio
Grades
Location
Rank: #11.
Student-Teacher Ratio: 1:1
Grades: 9-12
978 Haskell Ave
Rockford, IL 61103
(815) 966-3251
Rockford, IL 61103
(815) 966-3251
Rank: #2 - 32. - 3.
Douglass Academy High School
(Math: <50% | Reading: <50%)
Rank:
Rank:
9/
Top 20%10
Student-Teacher Ratio: 2:1
Grades: 9-12
543 N Waller Ave
Chicago, IL 60644
(773) 534-6176
Chicago, IL 60644
(773) 534-6176
Rank: #2 - 32. - 3.
Il Youth Center - Pere Marquette
Alternative School
Student-Teacher Ratio: 2:1
Grades: 8-12
17808 State Highway 100 W
Grafton, IL 62037
(618) 786-2371
Grafton, IL 62037
(618) 786-2371
Rank: #4 - 94. - 9.
Alcott College Prep
(Math: 10-14% | Reading: ≤10%)
Rank:
Rank:
3/
Bottom 50%10
Student-Teacher Ratio: 4:1
Grades: 9-12
2957 N Hoyne Ave
Chicago, IL 60618
(773) 534-5970
Chicago, IL 60618
(773) 534-5970
Rank: #4 - 94. - 9.
Illinois Youth Center-warrenville
Alternative School
Student-Teacher Ratio: 4:1
Grades: 8-12
30w200 Ferry Rd
Naperville, IL 60563
(630) 983-6231
Naperville, IL 60563
(630) 983-6231
Rank: #4 - 94. - 9.
Ohio Community High School
(Math: ≥50% | Reading: <50%)
Rank:
Rank:
9/
Top 20%10
Student-Teacher Ratio: 4:1
Grades: 9-12
103 Memorial Street
Ohio, IL 61349
(815) 376-2934
Ohio, IL 61349
(815) 376-2934
Rank: #4 - 94. - 9.
School District 428 Iyc-hrb
Alternative School
(Math: <50% | Reading: <50%)
Rank:
Rank:
9/
Top 20%10
Student-Teacher Ratio: 4:1
Grades: 7-12
1201 W Poplar St
Harrisburg, IL 62946
(618) 252-8681
Harrisburg, IL 62946
(618) 252-8681
Rank: #4 - 94. - 9.
Spry Community Links High School
(Math: <50% | Reading: ≤20%)
Rank:
Rank:
7/
Top 50%10
Student-Teacher Ratio: 4:1
Grades: 9-12
2400 S Marshall Blvd
Chicago, IL 60623
(773) 534-1997
Chicago, IL 60623
(773) 534-1997
Rank: #4 - 94. - 9.
Ybmc Charter School
Charter School
(Math: <50% | Reading: <50%)
Rank:
Rank:
9/
Top 20%10
Student-Teacher Ratio: 4:1
Grades: 11-12
360 Wylie Dr Ste 305
Normal, IL 61761
(309) 454-3898
Normal, IL 61761
(309) 454-3898
Rank: #10 - 1510. - 15.
Brussels High School
(Math: 21-39% | Reading: 21-39%)
Rank:
Rank:
7/
Top 50%10
Student-Teacher Ratio: 5:1
Grades: 7-12
128 School St
Brussels, IL 62013
(618) 883-2131
Brussels, IL 62013
(618) 883-2131
Rank: #10 - 1510. - 15.
Iyc Chicago
Alternative School
(Math: <50% | Reading: <50%)
Rank:
Rank:
9/
Top 20%10
Student-Teacher Ratio: 5:1
Grades: 6-12
136 N Western Ave
Chicago, IL 60612
(312) 633-5219
Chicago, IL 60612
(312) 633-5219
Rank: #10 - 1510. - 15.
Meredosia-chambersburg High School
(Math: <50% | Reading: <50%)
Rank:
Rank:
9/
Top 20%10
Student-Teacher Ratio: 5:1
Grades: 9-12
830 Main St
Meredosia, IL 62665
(217) 584-1744
Meredosia, IL 62665
(217) 584-1744
Rank: #10 - 1510. - 15.
Ogden Int High School
(Math: 20-24% | Reading: 15-19%)
Rank:
Rank:
5/
Bottom 50%10
Student-Teacher Ratio: 5:1
Grades: 9-12
1250 W Erie St
Chicago, IL 60642
(773) 534-0866
Chicago, IL 60642
(773) 534-0866
Rank: #10 - 1510. - 15.
Raby High School
(Math: ≤20% | Reading: ≤10%)
Rank:
Rank:
3/
Bottom 50%10
Student-Teacher Ratio: 5:1
Grades: 9-12
3545 W Fulton Blvd
Chicago, IL 60624
(773) 534-6755
Chicago, IL 60624
(773) 534-6755
Rank: #10 - 1510. - 15.
Williams Medical Prep High School
(Math: ≤20% | Reading: ≤20%)
Rank:
Rank:
4/
Bottom 50%10
Student-Teacher Ratio: 5:1
Grades: 9-12
4934 S Wabash Ave
Chicago, IL 60615
(773) 535-1120
Chicago, IL 60615
(773) 535-1120
Rank: #16 - 2116. - 21.
Bronzeville Scholastic High School
(Math: <50% | Reading: <50%)
Rank:
Rank:
9/
Top 20%10
Student-Teacher Ratio: 6:1
Grades: 9-12
4934 S Wabash Ave
Chicago, IL 60615
(773) 535-1150
Chicago, IL 60615
(773) 535-1150
Rank: #16 - 2116. - 21.
Deland-weldon High School
(Math: <50% | Reading: <50%)
Rank:
Rank:
9/
Top 20%10
Student-Teacher Ratio: 6:1
Grades: 9-12
304 E Il Route 10
De Land, IL 61839
(309) 928-7691
De Land, IL 61839
(309) 928-7691
Rank: #16 - 2116. - 21.
Hutsonville High School
(Math: ≤20% | Reading: 21-39%)
Rank:
Rank:
6/
Top 50%10
Student-Teacher Ratio: 6:1
Grades: 9-12
500 W Clover St
Hutsonville, IL 62433
(618) 563-4913
Hutsonville, IL 62433
(618) 563-4913
Rank: #16 - 2116. - 21.
Kansas High School
(Math: 11-19% | Reading: 20-29%)
Rank:
Rank:
4/
Bottom 50%10
Student-Teacher Ratio: 6:1
Grades: 7-12
310 S Front
Kansas, IL 61933
(217) 948-5175
Kansas, IL 61933
(217) 948-5175
Rank: #16 - 2116. - 21.
Oakland High School
(Math: ≤20% | Reading: <50%)
Rank:
Rank:
7/
Top 50%10
Student-Teacher Ratio: 6:1
Grades: 9-12
310 Teeter St
Oakland, IL 61943
(217) 346-2118
Oakland, IL 61943
(217) 346-2118
Rank: #16 - 2116. - 21.
V I T Sr High School
(Math: ≤20% | Reading: ≤20%)
Rank:
Rank:
4/
Bottom 50%10
Student-Teacher Ratio: 6:1
Grades: 9-12
1500 E Us Highway 136
Table Grove, IL 61482
(309) 758-5136
Table Grove, IL 61482
(309) 758-5136
Rank: #22 - 3222. - 32.
Air Force Academy High School
(Math: ≤10% | Reading: 11-19%)
Rank:
Rank:
3/
Bottom 50%10
Student-Teacher Ratio: 7:1
Grades: 9-12
3630 S Wells St
Chicago, IL 60609
(773) 535-1590
Chicago, IL 60609
(773) 535-1590
Rank: #22 - 3222. - 32.
Astoria High School
(Math: ≤20% | Reading: ≤20%)
Rank:
Rank:
4/
Bottom 50%10
Student-Teacher Ratio: 7:1
Grades: 9-12
402 N Jefferson St
Astoria, IL 61501
(309) 329-2156
Astoria, IL 61501
(309) 329-2156
Rank: #22 - 3222. - 32.
Bushnell-prairie City High School
(Math: ≤10% | Reading: ≤10%)
Rank:
Rank:
2/
Bottom 50%10
Student-Teacher Ratio: 7:1
Grades: 9-12
845 Walnut St
Bushnell, IL 61422
(309) 772-2113
Bushnell, IL 61422
(309) 772-2113
Rank: #22 - 3222. - 32.
Cisne High School
(Math: ≤20% | Reading: 11-19%)
Rank:
Rank:
4/
Bottom 50%10
Student-Teacher Ratio: 7:1
Grades: 9-12
1456 Us Highway 45
Cisne, IL 62823
(618) 673-2154
Cisne, IL 62823
(618) 673-2154
Rank: #22 - 3222. - 32.
Earlville Jr/sr High School
(Math: ≤20% | Reading: ≤20%)
Rank:
Rank:
4/
Bottom 50%10
Student-Teacher Ratio: 7:1
Grades: 9-12
415 W Union St
Earlville, IL 60518
(815) 246-8361
Earlville, IL 60518
(815) 246-8361
Rank: #22 - 3222. - 32.
Greenfield High School
(Math: 11-19% | Reading: ≤20%)
Rank:
Rank:
4/
Bottom 50%10
Student-Teacher Ratio: 7:1
Grades: 9-12
502 East St
Greenfield, IL 62044
(217) 368-2219
Greenfield, IL 62044
(217) 368-2219
Rank: #22 - 3222. - 32.
La Moille Jr/sr High School
(Math: 11-19% | Reading: ≤10%)
Rank:
Rank:
3/
Bottom 50%10
Student-Teacher Ratio: 7:1
Grades: 7-12
801 S Main St
La Moille, IL 61330
(815) 638-2018
La Moille, IL 61330
(815) 638-2018
Rank: #22 - 3222. - 32.
Odin Attendance Center 9-12
(Math: ≤20% | Reading: <50%)
Rank:
Rank:
7/
Top 50%10
Student-Teacher Ratio: 7:1
Grades: 9-12
102 S Merritt St
Odin, IL 62870
(618) 740-4183
Odin, IL 62870
(618) 740-4183
Rank: #22 - 3222. - 32.
Scales Mound High School
(Math: 40-59% | Reading: 21-39%)
Rank:
Rank:
8/
Top 30%10
Student-Teacher Ratio: 7:1
Grades: 9-12
210 Main St
Scales Mound, IL 61075
(815) 845-2215
Scales Mound, IL 61075
(815) 845-2215
Rank: #22 - 3222. - 32.
Tri-point High School
(Math: 30-39% | Reading: 11-19%)
Rank:
Rank:
5/
Bottom 50%10
Student-Teacher Ratio: 7:1
Grades: 9-12
101 E Van Alstyne St
Cullom, IL 60929
(815) 689-2110
Cullom, IL 60929
(815) 689-2110
Rank: #22 - 3222. - 32.
Zeigler-royalton High School
(Math: ≤20% | Reading: ≤10%)
Rank:
Rank:
3/
Bottom 50%10
Student-Teacher Ratio: 7:1
Grades: 9-12
4989 State Highway 148
Mulkeytown, IL 62865
(618) 596-5841
Mulkeytown, IL 62865
(618) 596-5841
Rank: #33 - 4933. - 49.
Armstrong High School
(Math: ≤20% | Reading: 11-19%)
Rank:
Rank:
4/
Bottom 50%10
Student-Teacher Ratio: 8:1
Grades: 9-12
30474 Smith
Armstrong, IL 61812
(217) 569-2122
Armstrong, IL 61812
(217) 569-2122
Rank: #33 - 4933. - 49.
Blue Ridge High School
(Math: 11-19% | Reading: 30-39%)
Rank:
Rank:
6/
Top 50%10
Student-Teacher Ratio: 8:1
Grades: 9-12
411 N John St
Farmer City, IL 61842
(309) 928-2622
Farmer City, IL 61842
(309) 928-2622
Rank: #33 - 4933. - 49.
Cissna Park Sr High School
(Math: ≤20% | Reading: ≤20%)
Rank:
Rank:
4/
Bottom 50%10
Student-Teacher Ratio: 8:1
Grades: 9-12
511 N 2nd St
Cissna Park, IL 60924
(815) 457-2171
Cissna Park, IL 60924
(815) 457-2171
Show 100 more public schools in IL (out of 698 total schools)
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Frequently Asked Questions
What is the Illinois average public high schools student-teacher ratio?
The Illinois average public high schools student-teacher ratio is 15:1 for 2026.
What are the public high schools with the lowest student-teacher ratio in Illinois?
The best top-ranked public high schools in Illinois include Roosevelt Center, Douglass Academy High School and Il Youth Center - Pere Marquette.
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