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The Avery Coonley School
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Best Illinois Private Schools Belonging to National Association of Independent Schools (NAIS) (2026)

For the 2026 school year, there are 44 private schools belonging to National Association of Independent Schools (NAIS) serving 14,854 students in Illinois. You can also find more schools membership associations in Illinois.
The top ranked private schools belonging to National Association of Independent Schools (NAIS) in Illinois include The Latin School Of Chicago, Lake Forest Academy, and University of Chicago Laboratory Schools.
The average tuition cost is $29,710, which is higher than the Illinois private school average tuition cost of $12,457.
18% of private schools belonging to National Association of Independent Schools (NAIS) in Illinois are religiously affiliated (most commonly Catholic and Islamic).

Quick Facts (2026)

  • # Private Schools: 44

Quick Facts (2026)

  • # Private Schools: 44

Top Ranked Private Schools Belonging to National Association of Independent Schools (NAIS) in Illinois (2026)

The Avery Coonley School Photo
The Avery Coonley School
Gr: PK-8 | 332 students
Avg. class size: 16 students
Sports: 4 | Extracurriculars: 14
1400 Maple Avenue
Downers Grove, IL 60515
(630) 969-0800
(7)
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Baker Demonstration School Photo
Baker Demonstration School
Gr: NS-8 | 209 students
Avg. class size: 18 students
Sports: 6 | Extracurriculars: 15
201 Sheridan Road
Wilmette, IL 60091
(847) 425-5800
(6)
View Profile
Catherine Cook School Photo
Catherine Cook School
Gr: NS-8 | 422 students
Avg. class size: 15 students
Sports: 8 | Extracurriculars: 4
226 W Schiller St
Chicago, IL 60610
(312) 266-3381
(13)
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The Chicago Academy For The Arts Photo
The Chicago Academy For The Arts
Gr: 9-12 | 102 students
Avg. class size: 10 students
Extracurriculars: 9
Specialized Curriculum
1010 W Chicago Avenue
Chicago, IL 60642
(312) 421-0202
(8)
View Profile
Chicago City Day School Photo
Chicago City Day School
Gr: PK-8
Avg. class size: 15 students
Sports: 3 | Extracurriculars: 7
541 W Hawthorne Pl
Chicago, IL 60657
(773) 327-0900
(5)
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Morgan Park Academy Photo
Morgan Park Academy
Gr: PK-12 | 475 students
Avg. class size: 17 students
Sports: 8
2153 W 111th St
Chicago, IL 60643
(773) 881-6700
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Academy High Photo
Academy High
Gr: 9-12 | 48 students
Sports: 8 | Extracurriculars: 7
2001 Fox Drive
Champaign, IL 61820
(217) 239-6000
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Ancona School Photo
Ancona School
Gr: PK-8 | 215 students
Avg. class size: 20 students
Sports: 4 | Extracurriculars: 8
4770 S Dorchester Ave
Chicago, IL 60615
(773) 924-2356
(6)
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Beacon Academy Photo
Beacon Academy
Gr: 9-12 | 144 students
Avg. class size: 12 students
Sports: 12 | Extracurriculars: 21
Montessori School
1574 Sherman Avenue
Evanston, IL 60201
(224) 999-1177
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Bennett Day School Photo
Bennett Day School
Gr: PK-12 | 431 students
Avg. class size: 15 students
Sports: 7 | Extracurriculars: 6
Specialized Curriculum
955 W. Grand Ave.
Chicago, IL 60642
(312) 236-6388
(2)
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Bernard Zell Anshe Emet Day School Photo
Bernard Zell Anshe Emet Day School
Gr: NS-8 | 368 students
Avg. class size: 16 students
Sports: 6 | Extracurriculars: 8
Jewish
3751 N Broadway St
Chicago, IL 60613
(773) 281-1858
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Chiaravalle Montessori Photo
Chiaravalle Montessori
Gr: NS-8 | 315 students
Avg. class size: 20 students
Sports: 5 | Extracurriculars: 11
Montessori School
425 Dempster St
Evanston, IL 60201
(847) 864-2190
(12)
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Countryside School Photo
Countryside School
Gr: K-8 | 156 students
Avg. class size: 15 students
Sports: 3 | Extracurriculars: 7
4301 W Kirby Avenue
Champaign, IL 61822
(217) 355-1253
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Map of Francis W. Parker School
Francis W. Parker School
Gr: PK-12 | 907 students
Sports: 11
330 W Webster Ave
Chicago, IL 60614
(773) 797-5107
(6)
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Gce Lab School Photo
Gce Lab School
Gr: 9-12 | 50 students
Avg. class size: 16 students
Extracurriculars: 17
9 West Washington St, Fourth Floor
Chicago, IL 60602
(312) 643-0091
(1)
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Glenwood Academy Photo
Glenwood Academy
Gr: 1-7 | 111 students
Avg. class size: 14 students
Sports: 6
500 W 187th St
Glenwood, IL 60425
(708) 756-4663
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Map of Holy Family Catholic School
Holy Family Catholic School
Gr: PK-8 | 274 students
Catholic
2400 S Franklin Street Rd
Decatur, IL 62521
(217) 423-7049
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Map of Keith Country Day School
Keith Country Day School
Gr: PK-12 | 236 students
Sports: 5
1 Jacoby Pl
Rockford, IL 61107
(815) 399-8823
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Lake Forest Academy Photo
Lake Forest Academy
Gr: 9-12 | 452 students
Avg. class size: 12 students
Sports: 15 | Extracurriculars: 25
1500 W Kennedy Rd
Lake Forest, IL 60045
(847) 615-3257
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Lake Forest Country Day School Photo
Lake Forest Country Day School
Gr: NS-8 | 406 students
Avg. class size: 15 students
Sports: 12 | Extracurriculars: 3
145 S. Green Bay Road
Lake Forest, IL 60045
(847) 234-2350
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Show 9 more private schools in Illinois (out of 44 total schools)
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Frequently Asked Questions

What are the top ranked private schools belonging to National Association of Independent Schools (NAIS) in Illinois?
The top ranked private schools belonging to National Association of Independent Schools (NAIS) in Illinois include The Latin School Of Chicago, Lake Forest Academy, and University of Chicago Laboratory Schools.
How many private schools belonging to National Association of Independent Schools (NAIS) are located in Illinois?
44 private schools belonging to National Association of Independent Schools (NAIS) are located in Illinois.
How much do private schools belonging to National Association of Independent Schools (NAIS) cost in Illinois?
The average tuition cost is $29,710, which is higher than the Illinois private school average tuition cost of $12,457.
How diverse are private schools belonging to National Association of Independent Schools (NAIS) in Illinois?
Illinois private schools belonging to National Association of Independent Schools (NAIS) are approximately 32% minority students, which is lower than the Illinois private school average of 34%.
What percentage of private schools belonging to National Association of Independent Schools (NAIS) are religiously affiliated in Illinois?
18% of private schools belonging to National Association of Independent Schools (NAIS) in Illinois are religiously affiliated (most commonly Catholic and Islamic).
44
Private Schools
14,854
Students
$29,710
Avg. Tuition
32%
Students of Color
8:1
Student-Teacher Ratio

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