Unity Christian School Photo

Best Williamson County Private Schools (2026)

For the 2026 school year, there are 4 private schools serving 562 students in Williamson County, IL (there are 24 public schools, serving 9,716 public students). 5% of all K-12 students in Williamson County, IL are educated in private schools (compared to the IL state average of 12%).
The top-ranked private school in Williamson County, IL is Our Lady Of Mt Carmel School.
100% of private schools in Williamson County, IL are religiously affiliated (most commonly Christian and Seventh Day Adventist).

Top-Ranked Williamson County Private Schools (2026)

School
Location
Quick Facts
Our Lady Of Mt Carmel School
(Catholic)
300 W Monroe St
Herrin, IL 62948
(618) 942-4484
Gr: PK-8 | 256 students
Agape Christian High School
(Christian)
5208 Meadowland Pkwy
Marion, IL 62959
(618) 997-9302
Gr: 9-12 | 77 students
Marion Adventist School
(Seventh Day Adventist)
9314 Old Route 13
Marion, IL 62959
(618) 997-1430
Gr: PK-5 | 12 students Tuition listed
Unity Christian School
Unity Christian School Photo
(Christian)
100 E College St
Energy, IL 62933
(618) 542-3802
Gr: PK-8 | 217 students Avg. class size: 15 students Sports: 7 | Extracurrculars: 3 Tuition listed

Overview

This County (Williamson County)
This State (IL)
# Schools
4 Schools

Student Body:

# Students
562 Students
252,195 Students
% Average Students of Color
5%
34%

Academics and Faculty:

# Teachers
41 Teachers
18,845 Teachers
Average Student-Teacher Ratio
14:1
13:1
% Average Faculty w/Advanced Degree
15%
53%
Average Class Size
15 students
16 students

Tuition and Acceptance Rate:

Average Yearly Tuition Cost
$4,500
$12,671

Students by Ethnicity:

0.40
0.66
# American Indian Students
n/a
605 Students
% American Indian Students
n/a
n/a
# Asian Students
10 Students
10,504 Students
% Asian Students
2%
4%
# Hispanic Students
6 Students
25,140 Students
% Hispanic Students
1%
10%
# Black Students
7 Students
21,085 Students
% Black Students
1%
9%
# White Students
422 Students
129,137 Students
% White Students
75%
51%
# Hawaiian Students
1 Student
338 Students
% Hawaiian Students
n/a
n/a
# Two or more races Students
n/a
n/a
% of Two or more races Students
n/a
n/a
# Others Students
116 Students
65,580 Students
% of Others Students
21%
26%
All Ethnic Groups

Extracurriculars and Sports:

Average Number of Extracurriculars
3 extracurriculars
9 extracurriculars
Average Number of Sports
7 sports
6 sports

Frequently Asked Questions

What are the top-ranked private schools in Williamson County, IL?
The top-ranked private schools in Williamson County, IL is Our Lady Of Mt Carmel School.
How many private schools are located in Williamson County?
4 private schools are located in Williamson County.
What percentage of students in Williamson County go to private school?
5% of all K-12 students in Williamson County are educated in private schools (compared to the IL state average of 12%).
What percentage of private schools are religiously affiliated in Williamson County?
100% of private schools in Williamson County are religiously affiliated (most commonly Christian and Seventh Day Adventist).
Which private schools in Williamson County are often viewed compared to one another?

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