Private School Review - Established 2003

Oak Brook Private Schools (2026-27)

For the 2026-27 school year, there are 4 private schools serving 355 students in Oak Brook, IL, 43% of all K-12 students in Oak Brook, IL are educated in private schools versus public schools (compared to the IL state average of 12%).

Quick Facts (2026-27)

Quick Facts (2026-27)

Top Ranked Oak Brook Private Schools (2026-27)

Fusion Academy Oak Brook Photo
Fusion Academy Oak Brook
Gr: 6-12 | 29 students
Avg. class size: 1 student
Alternative School
3041 Butterfield Road, Suite 200
Oak Brook, IL 60523
(877) 673-8893
View Profile
Map of Kensington School Of The Highlands
Kensington School Of The Highlands
Gr: NS | 298 students
Daycare / Preschool
2215 York Road Ste 203
Oak Brook, IL 60523
(708) 246-5757
View Profile
Map of Bright Horizons
Bright Horizons
Gr: PK-K | 28 students
Daycare / Preschool
1520 Kensington 103
Oak Brook, IL 60523
(630) 216-4828
View Profile
Oak Brook, IL
Guidepost Montessori At Oak Brook
Daycare / Preschool
1717 W 22nd St
Oak Brook, IL 60523
(630) 568-6109
View Profile

Oak Brook, IL Private School Trends (10-Year)

3
Private Schools
355
Students
-14.7% (-61 students) 10-yr
1
Avg. Class Size
-93.3% (-14 students) 10-yr
30%
Students of Color
-9.1% (-3.0 pp) 10-yr
41:1
Student-Teacher Ratio
-60.6% (-63.0) 10-yr
Download town snapshot: CSV | XML | JSON 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.
Enrollment & Diversity
Category
This Town (Oak Brook)
This State (IL)
# Schools
3 Schools
1,624 Schools
# Students
355 Students
251,350 Students

Trends in the Average Number of Students Per Private School

YearOak Brook, IL AvgIllinois (IL)National
2025118166179
2024118162172
2023118171174
2022119178185
2021119174180
2020119168171
2019164174175
2018164171172
2017193177180
2016193175178
2015139168167
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% Students of Color
30%
34%

Percentage of Students of Color Trends (2015-2025)

YearOak Brook, IL AvgIllinois (IL)National
202530%34%34%
202430%34%34%
202330%34%33%
202235%34%33%
202135%34%32%
202033%35%32%
201935%33%31%
201835%33%31%
201733%34%32%
201633%34%32%
201533%35%32%
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0.24
0.66

Diversity Score Trends

YearOak Brook, IL AvgIllinois (IL)National
20250.240.660.65
20240.240.660.65
20230.240.660.65
20220.250.650.64
20210.250.650.64
20200.250.660.64
20190.110.650.63
20180.110.650.63
20170.060.620.61
20160.060.620.61
20150.090.630.61
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Show more data/charts: racial breakdown
# American Indian Students
n/a
605 Students
% American Indian Students
n/a
n/a
# Asian Students
2 Students
10,480 Students
% Asian Students
1%
4%

Asian Student Percentage Trends

YearOak Brook, IL AvgIllinois (IL)National
20251%5%5%
20241%5%5%
20231%5%5%
20221%4%4%
20211%5%4%
20201%4%4%
20192%4%4%
20182%5%4%
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# Hispanic Students
2 Students
25,032 Students
% Hispanic Students
1%
10%

Hispanic Student Percentage Trends

YearOak Brook, IL AvgIllinois (IL)National
20251%10%9%
20241%10%9%
20231%10%9%
20221%10%8%
20211%10%9%
20201%10%9%
20191%9%8%
20181%9%8%
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# Black Students
2 Students
21,046 Students
% Black Students
n/a
9%

Black Student Percentage Trends

YearOak Brook, IL AvgIllinois (IL)National
20251%8%7%
20241%8%7%
20231%8%8%
20221%8%7%
20211%8%7%
20201%9%8%
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# White Students
41 Students
128,862 Students
% White Students
11%
51%

White Student Percentage Trends

YearOak Brook, IL AvgIllinois (IL)National
202511%51%52%
202411%51%52%
202311%51%52%
202211%53%54%
202111%52%54%
202011%52%54%
20193%53%56%
20183%53%56%
20173%56%58%
20163%56%58%
20154%55%58%
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# Hawaiian Students
n/a
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
310 Students
65,479 Students
% of Others Students
87%
26%

Other Races Student Percentage Trends

YearOak Brook, IL AvgIllinois (IL)National
202586%26%26%
202486%26%26%
202386%26%25%
202286%25%25%
202186%25%25%
202086%25%24%
201994%25%24%
201894%24%23%
201797%22%22%
201697%23%22%
201596%23%21%
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All Ethnic Groups
Academics
# Teachers
8 Teachers
18,872 Teachers
Average Student-Teacher Ratio
41:1
13:1

Student-Teacher Ratio Trends (2015-2025)

YearOak Brook, IL AvgIllinois (IL)National
202541:113:111:1
202441:113:111:1
202341:113:111:1
2022109:113:111:1
2021109:113:111:1
202016:113:112:1
2019109:113:112:1
2018109:114:112:1
2017129:114:112:1
2016129:114:112:1
2015104:114:112:1
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Average Class Size
1 students
16 students

Class Size Trends (2015-2025)

YearOak Brook, IL AvgIllinois (IL)National
202511615
202411715
202311715
202211715
202111715
202011715
201911715
201811715
201711715
201611715
2015151715
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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.

Tuition & Aid
Admissions & Athletics

Frequently Asked Questions

What are the top ranked private schools in Oak Brook, IL?
The top ranked private schools in Oak Brook, IL is Kensington School Of The Highlands.
How many private schools are located in Oak Brook?
4 private schools are located in Oak Brook.
What percentage of students in Oak Brook go to private school?
43% of all K-12 students in Oak Brook are educated in private schools (compared to the IL state average of 12%).

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