For the 2025-26 school year, there are 2 public high schools serving 857 students in Mercer County, IL.
The top ranked public high schools in Mercer County, IL are Sherrard High School and Mercer County High School. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.
Mercer County, IL public high schools have an average math proficiency score of 17% (versus the Illinois public high school average of 26%), and reading proficiency score of 24% (versus the 29% statewide average). High schools in Mercer County have an average ranking of 5/10, which is in the bottom 50% of Illinois public high schools.
Mercer County, IL public high school have a Graduation Rate of 87%, which is equal to the Illinois average of 87%.
The school with highest graduation rate is Sherrard High School, with 90-94% graduation rate. Read more about public school graduation rate statistics in Illinois or national school graduation rate statistics.
Minority enrollment is 11% 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 Mercer County (2025-26)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
Sherrard High School
(Math: 15-19% | Reading: 25-29%)
Rank:
Rank:
5/
Bottom 50%10
4701 176th Ave
Sherrard, IL 61281
(309) 593-2175
Sherrard, IL 61281
(309) 593-2175
Gr: 9-12 | 456 students Student-teacher ratio: 13:1 Minority enrollment: 13%
Rank: #22.
Mercer County High School
(Math: 15-19% | Reading: 20-24%)
Rank:
Rank:
5/
Bottom 50%10
1500 S College Ave
Aledo, IL 61231
(309) 582-2223
Aledo, IL 61231
(309) 582-2223
Gr: 9-12 | 401 students Student-teacher ratio: 13:1 Minority enrollment: 7%
Mercer County Public Schools (Closed)
School
Location
Quick Facts
1002 S W 6th St
Aledo, IL 61231
(309) 582-2441
Aledo, IL 61231
(309) 582-2441
Gr: 6-8 | 202 students Student-teacher ratio: 14:1 Minority enrollment: 3%
101 N Holloway Ofc 1
Alexis, IL 61412
(309) 482-3333
Alexis, IL 61412
(309) 482-3333
Gr: 9-12 | 119 students
101 N Holloway Ofc 1
Alexis, IL 61412
(309) 482-3333
Alexis, IL 61412
(309) 482-3333
Gr: 7-8 | 38 students Minority enrollment: 3%
Po Box 436
Joy, IL 61260
(309) 584-4174
Joy, IL 61260
(309) 584-4174
Gr: 9-12 | 166 students Student-teacher ratio: 8:1 Minority enrollment: 1%
Po Box 436
Joy, IL 61260
(309) 584-4174
Joy, IL 61260
(309) 584-4174
Gr: 6-8 | 105 students Student-teacher ratio: 18:1 Minority enrollment: 1%
Frequently Asked Questions
What are the top ranked public high schools in Mercer County, IL?
The top ranked public high schools in Mercer County, IL include Sherrard High School and Mercer County High School.
How many public high schools are located in Mercer County?
2 public high schools are located in Mercer County.
What is the racial composition of students in Mercer County?
Mercer County public high schools minority enrollment is 11% of the student body (majority Hispanic), which is less than the Illinois public high schools average of 55% (majority Hispanic).
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