For the 2025-26 school year, there are 4 public high schools serving 762 students in Union County, IL.
The top ranked public high schools in Union County, IL are Dongola High School, Cobden High School and Shawnee High School. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.
Union County, IL public high schools have an average math proficiency score of 21% (versus the Illinois public high school average of 26%), and reading proficiency score of 18% (versus the 29% statewide average). High schools in Union County have an average ranking of 4/10, which is in the bottom 50% of Illinois public high schools.
Union 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 Cobden High School, with ≥90% graduation rate. Read more about public school graduation rate statistics in Illinois or national school graduation rate statistics.
Minority enrollment is 18% of the student body (majority Hispanic), which is less than the Illinois public high school average of 55% (majority Hispanic).
Best Public High Schools in Union County (2025-26)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
Dongola High School
(Math: <50% | Reading: 21-39%)
Rank:
Rank:
8/
Top 30%10
1000 High St
Dongola, IL 62926
(618) 827-3524
Dongola, IL 62926
(618) 827-3524
Gr: 9-12 | 60 students Student-teacher ratio: 20:1 Minority enrollment: 7%
Rank: #22.
Cobden High School
(Math: 20-29% | Reading: 11-19%)
Rank:
Rank:
4/
Bottom 50%10
413 N Appleknocker St
Cobden, IL 62920
(618) 893-4031
Cobden, IL 62920
(618) 893-4031
Gr: 9-12 | 139 students Student-teacher ratio: 11:1 Minority enrollment: 44%
Rank: #33.
Shawnee High School
(Math: ≤20% | Reading: ≤20%)
Rank:
Rank:
4/
Bottom 50%10
3365 State Hwy 3 N
Wolf Lake, IL 62998
(618) 833-5307
Wolf Lake, IL 62998
(618) 833-5307
Gr: 9-12 | 77 students Student-teacher ratio: 10:1 Minority enrollment: 8%
Rank: #44.
Anna-jonesboro High School
(Math: 15-19% | Reading: 15-19%)
Rank:
Rank:
4/
Bottom 50%10
608 S Main St
Anna, IL 62906
(618) 833-8502
Anna, IL 62906
(618) 833-8502
Gr: 9-12 | 486 students Student-teacher ratio: 14:1 Minority enrollment: 13%
Union County Public Schools (Closed)
School
Location
Quick Facts
Five County Vocational Sys-anna Campus High School (Closed 2013)
Vocational School
608 South Main St
Anna, IL 62906
(618) 833-8421
Anna, IL 62906
(618) 833-8421
Gr: 9-12
Five County Vocational Sys-cobden Campus High School (Closed 2013)
Vocational School
413 North Appleknocker St
Cobden, IL 62920
(618) 893-4031
Cobden, IL 62920
(618) 893-4031
Gr: 9-12
Safe School Roe 02 (Closed 2016)
Alternative School
1000 N Mail St Oak Hall
Anna, IL 62906
(618) 342-6778
Anna, IL 62906
(618) 342-6778
Gr: 6-12 | 12 students Student-teacher ratio: 12:1 Minority enrollment: 16%
Frequently Asked Questions
What are the top ranked public high schools in Union County, IL?
The top ranked public high schools in Union County, IL include Dongola High School, Cobden High School and Shawnee High School.
How many public high schools are located in Union County?
4 public high schools are located in Union County.
What is the racial composition of students in Union County?
Union County public high schools minority enrollment is 18% of the student body (majority Hispanic), which is less than the Illinois public high schools average of 55% (majority Hispanic).
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