Private School Review - Established 2003

Best Dekalb County Private Schools (2026-27)

For the 2026-27 school year, there are 9 private schools serving 700 students in Dekalb County, IL (there are 42 public schools, serving 16,209 public students). 4% of all K-12 students are educated in private schools (compared to the IL state average of 12%).
56% of private schools in Dekalb County, IL are religiously affiliated (most commonly Baptist and Catholic).

Quick Facts (2026-27)

Quick Facts (2026-27)

Top Ranked Dekalb County Private Schools (2026-27)

Map of St. Mary School
St. Mary School
Gr: NS-8 | 253 students
Avg. class size: 22 students
Sports: 4 | Extracurriculars: 4
Catholic
210 Gurler Rd
Dekalb, IL 60115
(815) 756-7905
(1)
View Profile
Map of Aurora Christian Schools Sycamore Campus
Aurora Christian Schools Sycamore Campus
Gr: PK-5 | 127 students
Avg. class size: 15 students
Sports: 4 | Extracurriculars: 3
Christian
355 N Cross St
Sycamore, IL 60178
(815) 895-8522
View Profile
Map of First Christian School
First Christian School
Gr: K-8 | 9 students
Baptist
316 N Sycamore Street
Genoa, IL 60135
(815) 784-2616
View Profile
Map of For Kids Only Inc. #2
For Kids Only Inc. #2
Gr: NS-PK | 40 students
705 S Main Street
Sandwich, IL 60548
(815) 786-8914
View Profile
Hillcrest Drive KinderCare Photo
Hillcrest Drive KinderCare
Gr: NS-PK
Daycare / Preschool
207 E Hillcrest Dr.
Dekalb, IL 60115
(815) 758-1541
View Profile
Map of Montessori Childrens House Of Sycamore And Dekalb
Montessori Childrens House Of Sycamore And Dekalb
Gr: K | 4 students
Montessori School
26555 Brickville Rd
Sycamore, IL 60178
(815) 895-0303
View Profile
Map of Northwester Center For Autism
Northwester Center For Autism
Gr: PK-12 | 85 students
Special Education School
315 N 6th St
Dekalb, IL 60115
(815) 787-4144
(1)
View Profile
Map of St. Mary Catholic School
St. Mary Catholic School
Gr: PK-8 | 104 students
Sports: 4 | Extracurriculars: 2
Catholic
222 Waterman St
Sycamore, IL 60178
(815) 895-5215
View Profile
Map of Somonauk Christian School
Somonauk Christian School
Gr: PK-12 | 78 students
Avg. class size: 10 students
Sports: 3
Baptist
315 E North St
Somonauk, IL 60552
(815) 498-2313
(1)
View Profile

Overview

Category
This State (IL)
US
# Schools
9 Schools

Trends in Total Number of Private Schools

YearDekalb County Total Schools
20259
20249
20239
202210
202110
202010
20199
20189
20179
201610
201510
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Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

# Students
700 Students
251,350 Students

Trends in the Average Number of Students Per Private School

YearDekalb County AverageIllinois (IL) AverageNational Average
202598166179
202494162172
202381171174
2022110178185
2021110174180
2020110168171
2019116174175
2018116171172
2017124177180
2016125175178
2015125168167
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% Average Students of Color
15%
34%

Percentage of Students of Color Trends (2015-2025)

YearDekalb County AverageIllinois (IL) AverageNational Average
202515%34%34%
202414%34%34%
202320%34%33%
202221%34%33%
202121%34%32%
202021%35%32%
201915%33%31%
201815%33%31%
201714%34%32%
201617%34%32%
201517%35%32%
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Academics and Faculty:

# Teachers
77 Teachers
18,872 Teachers
Average Student-Teacher Ratio
9:1
13:1

Student-Teacher Ratio Trends (2015-2025)

YearDekalb County AverageIllinois (IL) AverageNational Average
20259:113:111:1
20249:113:111:1
20238:113:111:1
20229:113:111:1
20219:113:111:1
20209:113:112:1
201911:113:112:1
201811:114:112:1
201712:114:112:1
201612:114:112:1
201512:114:112:1
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Average Class Size
16 students
16 students

Class Size Trends (2015-2025)

YearDekalb County AverageIllinois (IL) AverageNational Average
2025161615
2024101715
2023101715
2022101715
2021101715
2020101715
2019101715
2018101715
2017101715
2016101715
2015101715
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Tuition and Acceptance Rate:

Average Yearly Tuition Cost
$5,946
$12,457

Tuition Cost Trends (2015-2025)

YearDekalb County AverageIllinois (IL) AverageNational Average
2025$4,983$12,671$15,012
2024$4,592$9,594$13,254
2023$4,592$8,924$12,626
2022$3,781$8,609$12,187
2021$3,781$8,334$11,800
2020$3,781$8,312$11,512
2019$3,781$8,068$11,293
2018$3,781$7,898$11,017
2017$3,781$7,863$10,708
2016$3,750$7,289$10,356
2015$3,750$7,003$9,939
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Average % on Financial Aid
2%
34%

Percent on Financial Aid Trends (2015-2025)

YearDekalb County AverageIllinois (IL) AverageNational Average
20252%34%34%
20242%33%34%
20232%33%34%
20222%32%33%
20212%31%33%
20202%32%32%
20192%31%31%
20182%30%30%
20172%29%30%
20162%29%29%
20152%28%28%
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Students by Ethnicity:

0.47
0.66

Diversity Score Trends

YearDekalb County AverageIllinois (IL) AverageNational Average
20250.530.660.65
20240.500.660.65
20230.570.660.65
20220.580.650.64
20210.580.650.64
20200.580.660.64
20190.510.650.63
20180.510.650.63
20170.500.620.61
20160.540.620.61
20150.540.630.61
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Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

# American Indian Students
n/a
605 Students
% American Indian Students
n/a
n/a
# Asian Students
5 Students
10,480 Students
% Asian Students
1%
4%

Asian Student Percentage Trends

YearDekalb County AverageIllinois (IL) AverageNational Average
20251%5%5%
20241%5%5%
20231%5%5%
20222%4%4%
20212%5%4%
20202%4%4%
20192%4%4%
20182%5%4%
20171%4%4%
20162%3%4%
20152%4%4%
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Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

# Hispanic Students
57 Students
25,032 Students
% Hispanic Students
8%
10%

Hispanic Student Percentage Trends

YearDekalb County AverageIllinois (IL) AverageNational Average
20257%10%9%
20247%10%9%
202310%10%9%
202210%10%8%
202110%10%9%
202010%10%9%
20195%9%8%
20185%9%8%
20173%9%8%
20163%9%8%
20153%9%8%
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Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

# Black Students
24 Students
21,046 Students
% Black Students
3%
9%

Black Student Percentage Trends

YearDekalb County AverageIllinois (IL) AverageNational Average
20253%8%7%
20243%8%7%
20232%8%8%
20224%8%7%
20214%8%7%
20204%9%8%
20194%9%7%
20184%9%7%
20175%9%7%
20165%9%7%
20155%9%8%
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Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

# White Students
529 Students
128,862 Students
% White Students
70%
51%

White Student Percentage Trends

YearDekalb County AverageIllinois (IL) AverageNational Average
202564%51%52%
202467%51%52%
202359%51%52%
202260%53%54%
202160%52%54%
202060%52%54%
201966%53%56%
201866%53%56%
201766%56%58%
201660%56%58%
201560%55%58%
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Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

# 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
138 Students
65,479 Students
% of Others Students
18%
26%

Other Races Student Percentage Trends

YearDekalb County AverageIllinois (IL) AverageNational Average
202525%26%26%
202422%26%26%
202328%26%25%
202224%25%25%
202124%25%25%
202024%25%24%
201923%25%24%
201823%24%23%
201725%22%22%
201630%23%22%
201530%23%21%
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Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

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?

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