For the 2026 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 (2026)
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 | 62 students Minority enrollment: 6%
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 | 135 students Student-teacher ratio: 10:1 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 | 72 students Student-teacher ratio: 8:1 Minority enrollment: 5%
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 | 476 students Student-teacher ratio: 14:1 Minority enrollment: 11%
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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