For the 2026 school year, there are 3 private high schools serving 640 students in Decatur, IL.
The top-ranked private high schools in Decatur, IL include Hillside Bethel Christian School, Lutheran School Association, and St. Teresa High School.
The average acceptance rate is 40%, which is lower than the Illinois private high school average acceptance rate of 81%.
100% of private high schools in Decatur, IL are religiously affiliated (most commonly Catholic and Lutheran Church Missouri Synod).
Top-Ranked Decatur Private High Schools (2026)
School
Location
Quick Facts
Hillside Bethel Christian School
(Pentecostal)
3575 E Greenhill Rd
Decatur, IL 62521
(217) 429-5590
Decatur, IL 62521
(217) 429-5590
Gr: PK-10 | 17 students Tuition & acceptance rate listed
Lutheran School Association
(Lutheran Church Missouri Synod)
2001 E Mound Rd
Decatur, IL 62526
(217) 233-2001
Decatur, IL 62526
(217) 233-2001
Gr: PK-12 | 396 students
St. Teresa High School
(Catholic)
2710 N Water St
Decatur, IL 62526
(217) 875-2431
Decatur, IL 62526
(217) 875-2431
Gr: 9-12 | 227 students
Decatur, Illinois Private Schools (Closed)
School
Location
Quick Facts
St. James School (Closed 2006)
(Catholic)
249 S Webster Street
Decatur, IL 62521
(217) 422-7031
Decatur, IL 62521
(217) 422-7031
Gr: K-8 | 106 students
Overview
This Town (Decatur)
This State (IL)
# Schools
3 Schools
Student Body:
# Students
640 Students
89,884 Students
% Average Students of Color
13%
35%
Academics and Faculty:
# Teachers
50 Teachers
7,537 Teachers
Average Student-Teacher Ratio
13:1
11:1
Tuition and Acceptance Rate:
Average Yearly Tuition Cost
$25,000
$15,730
Average Acceptance Rate
40%
81%
Students by Ethnicity:
Diversity Score
0.47
0.62
# American Indian Students
3 Students
298 Students
% American Indian Students
n/a
n/a
# Asian Students
6 Students
5,624 Students
% Asian Students
1%
6%
# Hispanic Students
11 Students
10,091 Students
% Hispanic Students
2%
11%
# Black Students
48 Students
9,671 Students
% Black Students
8%
11%
# White Students
448 Students
52,469 Students
% White Students
70%
58%
# Hawaiian Students
n/a
105 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
124 Students
12,125 Students
% of Others Students
19%
14%
All Ethnic Groups
Extracurriculars and Sports:
Frequently Asked Questions
What are the top-ranked private high schools in Decatur, IL?
The top-ranked private high schools in Decatur, IL include Hillside Bethel Christian School, Lutheran School Association, and St. Teresa High School.
How many private high schools are located in Decatur?
3 private high schools are located in Decatur.
What percentage of private high schools are religiously affiliated in Decatur?
100% of private high schools in Decatur are religiously affiliated (most commonly Catholic and Lutheran Church Missouri Synod).
Which private high schools in Decatur are often viewed compared to one another?
Popular comparisons of private high schools in Decatur include: St. Teresa High School vs. Lutheran School Association
Recent Articles
Financial Aid 101 for Private School Families 2026
Guide to private school financial aid in 2026, with current costs, key planning timelines and practical steps parents need to maximize aid options.
Why Extracurricular Activities Matter in 2026
Discover why extracurricular activities remain essential in 2026, with updated research, costs, and admissions insights for parents and students.
How to Appeal for Financial Aid After Admission
Learn how to appeal for financial aid after admission to a private school, with expert steps, timelines, and 2026 updates for families.