Hillcrest Drive KinderCare Photo - Sensory Fun

Best Dekalb County Private Schools (2026)

For the 2026 school year, there are 9 private schools serving 724 students in Dekalb County, IL (there are 42 public schools, serving 16,209 public students). 4% of all K-12 students in Dekalb County, IL are educated in private schools (compared to the IL state average of 12%).
The top-ranked private school in Dekalb County, IL is St. Mary School.
56% of private schools in Dekalb County, IL are religiously affiliated (most commonly Baptist and Catholic).

Top-Ranked Dekalb County Private Schools (2026)

School
Location
Quick Facts
St. Mary School
(Catholic)
(1)
210 Gurler Rd
Dekalb, IL 60115
(815) 756-7905
Gr: NS-8 | 253 students Avg. class size: 22 students Sports: 4 | Extracurrculars: 4 Tuition listed
355 N Cross St
Sycamore, IL 60178
(815) 895-8522
Gr: PK-8 | 151 students Sports: 3 Tuition listed
First Christian School
(Baptist)
316 N Sycamore Street
Genoa, IL 60135
(815) 784-2616
Gr: K-8 | 9 students
For Kids Only Inc. #2
705 S Main Street
Sandwich, IL 60548
(815) 786-8914
Gr: NS-PK | 40 students
Hillcrest Drive KinderCare
Hillcrest Drive KinderCare Photo - Sensory Fun
Daycare / Preschool
207 E Hillcrest Dr.
Dekalb, IL 60115
(815) 758-1541
Gr: NS-PK
26555 Brickville Rd
Sycamore, IL 60178
(815) 895-0303
Gr: K | 4 students
Northwester Center For Autism
Special Education School
(1)
315 N 6th St
Dekalb, IL 60115
(815) 787-4144
Gr: PK-12 | 85 students
St. Mary Catholic School
(Catholic)
222 Waterman St
Sycamore, IL 60178
(815) 895-5215
Gr: PK-8 | 104 students Sports: 4 | Extracurrculars: 2 Tuition listed
Somonauk Christian School
(Baptist)
(1)
315 E North St
Somonauk, IL 60552
(815) 498-2313
Gr: PK-12 | 78 students Avg. class size: 10 students Sports: 3 Tuition listed

Overview

This County (Dekalb County)
This State (IL)
# Schools
9 Schools

Student Body:

# Students
724 Students
252,125 Students
% Average Students of Color
15%
34%

Academics and Faculty:

# Teachers
86 Teachers
18,878 Teachers
Average Student-Teacher Ratio
8:1
13:1
Average Class Size
16 students
16 students

Tuition and Acceptance Rate:

Average Yearly Tuition Cost
$5,946
$12,512
Average % on Financial Aid
2%
34%

Students by Ethnicity:

0.49
0.66
# American Indian Students
n/a
605 Students
% American Indian Students
n/a
n/a
# Asian Students
5 Students
10,504 Students
% Asian Students
1%
4%
# Hispanic Students
57 Students
25,130 Students
% Hispanic Students
7%
10%
# Black Students
24 Students
21,075 Students
% Black Students
3%
9%
# White Students
529 Students
129,117 Students
% White Students
69%
51%
# Hawaiian Students
2 Students
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
152 Students
65,546 Students
% of Others Students
20%
26%
All Ethnic Groups

Extracurriculars and Sports:

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

Frequently Asked Questions

What are the top-ranked private schools in Dekalb County, IL?
The top-ranked private schools in Dekalb County, IL is St. Mary School.
How many private schools are located in Dekalb County?
9 private schools are located in Dekalb County.
How diverse are private schools in Dekalb County?
Dekalb County private schools are approximately 15% minority students, which is lower than the Illinois private school average of 34%.
What percentage of students in Dekalb County go to private school?
4% of all K-12 students in Dekalb County are educated in private schools (compared to the IL state average of 12%).
What percentage of private schools are religiously affiliated in Dekalb County?
56% of private schools in Dekalb County are religiously affiliated (most commonly Baptist and Catholic).
Which private schools in Dekalb County are often viewed compared to one another?

Recent Articles

Navigating Private School Finances 2026
Navigating Private School Finances 2026
Essential 2026 guide for parents on private school costs, financial aid, and planning strategies.
Preparation for Standardized Tests & College Admissions 2026
Preparation for Standardized Tests & College Admissions 2026
A 2026 guide for private school test prep and college admissions strategies, with insights, trends, and best practices for families and educators.
Mental Health & Wellness Support in Private Schools: Key Questions for Parents
Mental Health & Wellness Support in Private Schools: Key Questions for Parents
Discover essential questions about mental health & wellness support in private schools before enrolling, with 2026 updates for informed decisions.