For the 2026 school year, there are 21 public high schools serving 12,325 students in St. Clair County, IL.
The top-ranked public high schools in St. Clair County, IL are Hollywood Heights, Lovejoy Technology Academy and Saint Clair Co Roe Safe School. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.
St. Clair County, IL public high schools have an average math proficiency score of 23% (versus the Illinois public high school average of 26%), and reading proficiency score of 29% (versus the 29% statewide average). High schools in St. Clair County have an average ranking of 8/10, which is in the top 30% of Illinois public high schools.
St. Clair County, IL public high school have a Graduation Rate of 86%, which is less than the Illinois average of 87%.
The school with highest graduation rate is Freeburg Community High School, with ≥95% graduation rate. Read more about public school graduation rate statistics in Illinois or national school graduation rate statistics.
Minority enrollment is 54% of the student body (majority Black), which is less than the Illinois public high school average of 55% (majority Hispanic).
Best Public High Schools in St. Clair County (2026)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #1 - 31. - 3.
Hollywood Heights
Alternative School
(Math: <50% | Reading: <50% )
Rank:
Rank:
10/
Top 10%10
6 S Oakland Dr
Caseyville, IL 62232
(618) 346-6350
Caseyville, IL 62232
(618) 346-6350
Gr: K-12
Rank: #1 - 31. - 3.
Lovejoy Technology Academy
(Math: <50% | Reading: <50% )
Rank:
Rank:
10/
Top 10%10
800 Madison St
Lovejoy, IL 62059
(618) 271-1028
Lovejoy, IL 62059
(618) 271-1028
Gr: 9-12 | 27 students Student-teacher ratio: 14:1 Minority enrollment: 96%
Rank: #1 - 31. - 3.
Saint Clair Co Roe Safe School
Alternative School
(Math: <50% | Reading: <50% )
Rank:
Rank:
10/
Top 10%10
1722 W Main St
Belleville, IL 62226
(618) 233-6874
Belleville, IL 62226
(618) 233-6874
Gr: 5-12
Rank: #44.
Mascoutah High School
(Math: 39% | Reading: 48%)
Rank:
Rank:
9/
Top 20%10
1313 W Main St
Mascoutah, IL 62258
(618) 566-8523
Mascoutah, IL 62258
(618) 566-8523
Gr: 9-12 | 1,243 student Student-teacher ratio: 16:1 Minority enrollment: 34%
Rank: #55.
Freeburg Community High School
(Math: 35-39% | Reading: 45-49%)
Rank:
Rank:
9/
Top 20%10
401 S Monroe St
Freeburg, IL 62243
(618) 539-5533
Freeburg, IL 62243
(618) 539-5533
Gr: 9-12 | 689 students Student-teacher ratio: 15:1 Minority enrollment: 9%
Rank: #66.
O Fallon High School
(Math: 36% | Reading: 42%)
Rank:
Rank:
8/
Top 30%10
600 S Smiley St
O Fallon, IL 62269
(618) 632-3507
O Fallon, IL 62269
(618) 632-3507
Gr: 9-12 | 2,540 students Student-teacher ratio: 16:1 Minority enrollment: 41%
Rank: #77.
New Athens High School
(Math: ≤20% | Reading: 30-39%)
Rank:
Rank:
6/
Top 50%10
501 Hanft St
New Athens, IL 62264
(618) 475-2173
New Athens, IL 62264
(618) 475-2173
Gr: 9-12 | 164 students Student-teacher ratio: 12:1 Minority enrollment: 6%
Rank: #88.
Belleville High School-east
(Math: 22% | Reading: 27%)
Rank:
Rank:
6/
Top 50%10
2555 West Blvd
Belleville, IL 62221
(618) 222-3706
Belleville, IL 62221
(618) 222-3706
Gr: 9-12 | 2,600 students Student-teacher ratio: 17:1 Minority enrollment: 64%
Rank: #99.
Lebanon High School
(Math: 10-14% | Reading: 35-39%)
Rank:
Rank:
6/
Top 50%10
200 W Schuetz St
Lebanon, IL 62254
(618) 537-4423
Lebanon, IL 62254
(618) 537-4423
Gr: 6-12 | 218 students Student-teacher ratio: 9:1 Minority enrollment: 27%
Rank: #1010.
Belleville High School-west
(Math: 18% | Reading: 22%)
Rank:
Rank:
5/
Bottom 50%10
4063 Frank Scott Pkwy W
Belleville, IL 62223
(618) 222-7610
Belleville, IL 62223
(618) 222-7610
Gr: 9-12 | 2,118 students Student-teacher ratio: 16:1 Minority enrollment: 57%
Rank: #1111.
Siu Charter School Of East St Louis
Charter School
(Math: ≤20% | Reading: ≤20%)
Rank:
Rank:
4/
Bottom 50%10
601 James R Thompson Blvd
East Saint Louis, IL 62201
(618) 482-8391
East Saint Louis, IL 62201
(618) 482-8391
Gr: 9-12 | 99 students Student-teacher ratio: 17:1 Minority enrollment: 99%
Rank: #1212.
Marissa Jr & Sr High School
(Math: 15-19% | Reading: 15-19%)
Rank:
Rank:
4/
Bottom 50%10
300 School View Dr
Marissa, IL 62257
(618) 295-2393
Marissa, IL 62257
(618) 295-2393
Gr: 7-12 | 226 students Student-teacher ratio: 10:1 Minority enrollment: 14%
Rank: #1313.
Dupo High School
(Math: 11-19% | Reading: 11-19%)
Rank:
Rank:
3/
Bottom 50%10
600 Louisa Ave
Dupo, IL 62239
(618) 286-3214
Dupo, IL 62239
(618) 286-3214
Gr: 9-12 | 259 students Student-teacher ratio: 11:1 Minority enrollment: 18%
Rank: #14 - 1514. - 15.
Belleville Twp High School-night/alt School
Alternative School
(Math: ≤10% | Reading: ≤10% )
Rank:
Rank:
2/
Bottom 50%10
4063 Frank Scott Pkwy W
Belleville, IL 62223
(618) 222-7852
Belleville, IL 62223
(618) 222-7852
Gr: 9-12
Rank: #14 - 1514. - 15.
Gordon Bush Alt School For Education
Alternative School
(Math: ≤10% | Reading: ≤10% )
Rank:
Rank:
2/
Bottom 50%10
1516 Gross Ave
East Saint Louis, IL 62205
(618) 646-3760
East Saint Louis, IL 62205
(618) 646-3760
Gr: 5-12
Rank: #1616.
Cahokia High School
(Math: ≤5% | Reading: ≤5%)
Rank:
Rank:
1/
Bottom 50%10
800 Range Ln
East Saint Louis, IL 62206
(618) 332-3730
East Saint Louis, IL 62206
(618) 332-3730
Gr: 9-12 | 850 students Student-teacher ratio: 18:1 Minority enrollment: 97%
Rank: #1717.
East St Louis Senior High School
(Math: ≤1% | Reading: 3%)
Rank:
Rank:
1/
Bottom 50%10
4901 State St
East Saint Louis, IL 62205
(618) 646-3700
East Saint Louis, IL 62205
(618) 646-3700
Gr: 9-12 | 1,288 student Student-teacher ratio: 16:1 Minority enrollment: 98%
Rank: n/an/a
Acdc Penniman
Alternative School
300 Annunciation Ct
East Saint Louis, IL 62206
(618) 332-5101
East Saint Louis, IL 62206
(618) 332-5101
Gr: 6-12
Rank: n/an/a
Center For Academy And Vocnl Excel Cave
Alternative School
7645 Magna Dr
Belleville, IL 62223
(618) 222-7852
Belleville, IL 62223
(618) 222-7852
Gr: 9-12
Rank: n/an/a
Innovative Pathways Program
Alternative School
309 Hartman Ln
O Fallon, IL 62269
(618) 825-3900
O Fallon, IL 62269
(618) 825-3900
Gr: 4-12
Rank: n/an/a
St. Clair Co Juv Detention Center
Alternative School
9006 Lebanon Rd
Belleville, IL 62223
(618) 397-0766
Belleville, IL 62223
(618) 397-0766
Gr: 7-12
Frequently Asked Questions
What are the top-ranked public high schools in St. Clair County, IL?
The top-ranked public high schools in St. Clair County, IL include Hollywood Heights, Lovejoy Technology Academy and Saint Clair Co Roe Safe School.
How many public high schools are located in St. Clair County?
20 public high schools are located in St. Clair County.
What is the racial composition of students in St. Clair County?
St. Clair County public high schools minority enrollment is 54% of the student body (majority Black), which is less than the Illinois public high schools average of 55% (majority Hispanic).
Which public high schools in St. Clair County are often viewed compared to one another?
Popular comparisons of public high schools in St. Clair County include: Mascoutah High School vs. O Fallon High School, Belleville High School-west vs. Belleville High School-east, Belleville High School-east vs. Belleville High School-west
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