The Avery Coonley School Photo - 'Gathering' is a tradition at ACS where students in Groups 1-8, faculty, and staff come together as a community to participate in various activities such as watching a performance, interacting with a presentation, and more.

Top 20 Best Illinois Private Schools Belonging to Independent Schools Association of the Central States (ISACS) (2025)

For the 2025 school year, there are 31 private schools belonging to Independent Schools Association of the Central States (ISACS) serving 10,697 students in Illinois. You can also find more schools membership associations in Illinois.
The top ranked private schools belonging to Independent Schools Association of the Central States (ISACS) in Illinois include The Avery Coonley School, Chicago Jewish Day School, and University of Chicago Laboratory Schools.
The average tuition cost is $30,222, which is higher than the Illinois private school average tuition cost of $12,686.
16% of private schools belonging to Independent Schools Association of the Central States (ISACS) in Illinois are religiously affiliated (most commonly Jewish and Catholic).

Top Ranked Private Schools Belonging to Independent Schools Association of the Central States (ISACS) in Illinois (2025)

School
Location
Grades
Students
The Avery Coonley School
The Avery Coonley School Photo - 'Gathering' is a tradition at ACS where students in Groups 1-8, faculty, and staff come together as a community to participate in various activities such as watching a performance, interacting with a presentation, and more.
(7)
1400 Maple Avenue
Downers Grove, IL 60515
(630) 969-0800
Grades: PK-8
| 332 students
Baker Demonstration School
Baker Demonstration School Photo - Curiosity captured in the preschool class with hands on learning for our youngest students in a scientific inquiry.
(6)
201 Sheridan Road
Wilmette, IL 60091
(847) 425-5800
Grades: NS-8
| 209 students
Catherine Cook School
Catherine Cook School Photo
(13)
226 W Schiller St
Chicago, IL 60610
(312) 266-3381
Grades: NS-8
| 422 students
Chicago City Day School
Chicago City Day School Photo
(5)
541 W Hawthorne Pl
Chicago, IL 60657
(773) 327-0900
Grades: PK-8
| n/a students
German International School Chicago
German International School Chicago Photo - Hooray for 8th Grade Graduates
Special Program Emphasis
(1)
1726 W Berteau Ave
Chicago, IL 60613
(773) 857-3000
Grades: PK-8
| 199 students
Beacon Academy
Beacon Academy Photo
Montessori School
1574 Sherman Avenue
Evanston, IL 60201
(224) 999-1177
Grades: 9-12
| 150 students
3751 N Broadway St
Chicago, IL 60613
(773) 281-1858
Grades: NS-8
| 368 students
Chiaravalle Montessori
Chiaravalle Montessori Photo - Opening the North Wing in September 2015, Chiaravalle became the first LEED Platinum Montessori school addition in the US and the first LEED Platinum independent school addition in Illinois.
Montessori School
(12)
425 Dempster St
Evanston, IL 60201
(847) 864-2190
Grades: PK-8
| 328 students
The Chicago Academy For The Arts
The Chicago Academy For The Arts Photo - Chicagoland's independent high school for the arts.
Special Program Emphasis
1010 W Chicago Avenue
Chicago, IL 60642
(312) 421-0202
Grades: 9-12
| 137 students
Chicago Jewish Day School
Chicago Jewish Day School Photo
(Jewish)
3730 N California Ave
Chicago, IL 60618
(773) 948-8602
Grades: PK-8
| 247 students
Countryside School
4301 W Kirby Avenue
Champaign, IL 61822
(217) 355-1253
Grades: K-8
| 158 students
Frances Xavier Warde School
Frances Xavier Warde School Photo
(Catholic)
751 N State St
Chicago, IL 60654
(312) 268-2543
Grades: K-8
| 814 students
Hyde Park Day School - Chicago campus
Hyde Park Day School - Chicago campus Photo - HPDS creates a safe and nurturing environment designed to foster self-esteem, self-confidence, and a positive attitude toward learning.
Special Education School
(1)
6254 S. Ellis
Chicago, IL 60637
(773) 420-2550
Grades: 1-8
| 60 students
Hyde Park Day School - Northfield campus
Hyde Park Day School - Northfield campus Photo
Special Education School
(1)
1980 Old Willow Rd
Winnetka, IL 60093
(847) 446-7025
Grades: 1-8
| 66 students
145 S. Green Bay Road
Lake Forest, IL 60045
(847) 234-2350
Grades: NS-8
| 406 students
Lycee Francais De Chicago
Lycee Francais De Chicago Photo - The Lyce Franais de Chicago is a leading international, multilingual school that helps students grow into well-rounded, active citizens of the world.
Special Program Emphasis
(3)
1929 W. Wilson Avenue
Chicago, IL 60640
(773) 665-0066
Grades: PK-12
| 777 students
Near North Montessori
Near North Montessori Photo - An engaged learner in our Primary Class for children ages 3 years to 6 years, is receiving a lesson with a Montessori material known as the brown stair. The brown stair helps children develop their awareness of size differences
Montessori School
1434 W Division Street
Chicago, IL 60642
(773) 384-1434
Grades: NS-8
| 504 students
2017 W Montrose Ave
Chicago, IL 60618
(773) 327-3144
Grades: PK-8
| 260 students
310 Green Bay Rd
Winnetka, IL 60093
(847) 446-0674
Grades: PK-12
| 520 students
Quest Academy
Quest Academy Photo - Home of the Knights!
Special Program Emphasis
(1)
500 N Benton St
Palatine, IL 60067
(847) 202-8035
Grades: PK-8
| 257 students
Rochelle Zell Jewish High School
Rochelle Zell Jewish High School Photo - Check us out on Facebook, Instagram and Twitter
(Jewish)
1095 Lake Cook Road
Deerfield, IL 60015
(847) 324-3708
Grades: 9-12
| 147 students
Rogers Park Montessori School
Rogers Park Montessori School Photo
Montessori School
(8)
1800 W Balmoral Ave
Chicago, IL 60640
(773) 271-1700
Grades: PK-8
| 339 students
Roycemore School
Roycemore School Photo
(14)
1200 Davis Street
Evanston, IL 60201
(847) 866-6055
Grades: PK-12
| 230 students
Sacred Heart Schools
Sacred Heart Schools Photo
(Catholic)
(1)
6250 N Sheridan Road
Chicago, IL 60660
(773) 681-8414
Grades: PK-8
| 644 students
Science & Arts Academy
Science & Arts Academy Photo
Special Program Emphasis
(5)
1825 Miner St
Des Plaines, IL 60016
(847) 827-7880
Grades: PK-8
| 260 students
1362 E 59th Street
Chicago, IL 60637
(773) 702-9450
Grades: PK-12
| 2,224 students
Wolcott College Prep
Wolcott College Prep Photo - Wolcott College Prep (West Town) Chicago
Special Program Emphasis
(1)
524 N. Wolcott Ave.
Chicago, IL 60622
(312) 610-4900
Grades: 9-12
| 149 students
Alcuin Montessori School
Alcuin Montessori School Photo - Our campus.
Montessori School
324 N Oak Park Ave
Oak Park, IL 60302
(708) 366-1882
Grades: NS-8
| 133 students
Brehm Preparatory School
Brehm Preparatory School Photo - Small class sizes provide opportunities for 1:1 educational moments.
Special Education School
(3)
900 S. Brehm Lane
Carbondale, IL 62901
(618) 457-0371
Grades: 6-12
| 30 students
Brickton Montessori School
Brickton Montessori School Photo - Hands. On.When you can touch it, even complicated ideas becomes manageable. Montessori materials stimulate all our senses. With multiple ways of connecting to a single concept, every child can find a path to successful learning.
Montessori School
8622 W Catalpa Ave
Chicago, IL 60656
(773) 714-0646
Grades: NS-8
| 167 students
Countryside Montessori School
Countryside Montessori School Photo
Montessori School
1985 Pfingsten Road
Northbrook, IL 60062
(847) 498-1105
Grades: PK-8
| 160 students

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