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Best Missouri Private Schools Belonging to Independent Schools Association of the Central States (ISACS) (2026-27)

For the 2026-27 school year, there are 35 private schools belonging to Independent Schools Association of the Central States (ISACS) serving 11,427 students in Missouri. You can also find more schools membership associations in Missouri.
The top ranked private schools belonging to Independent Schools Association of the Central States (ISACS) in Missouri include Thomas Jefferson School, MICDS (Mary Institute and St. Louis Country Day School), and Pembroke Hill School.
The average tuition cost is $24,888, which is higher than the Missouri private school average tuition cost of $12,905.
29% of private schools belonging to Independent Schools Association of the Central States (ISACS) in Missouri are religiously affiliated (most commonly Catholic and Episcopal).

Quick Facts (2026-27)

  • # Private Schools: 35

Quick Facts (2026-27)

  • # Private Schools: 35

Top Ranked Private Schools Belonging to Independent Schools Association of the Central States (ISACS) in Missouri (2026-27)

Forsyth School Photo
Forsyth School
Gr: NS-6 | 394 students
Avg. class size: 12 students
Sports: 5 | Extracurriculars: 4
6235 Wydown Boulevard
Saint Louis, MO 63105
(314) 726-4542
(5)
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St. Paul's Episcopal Day School Photo
St. Paul's Episcopal Day School
Gr: PK-8 | 498 students
Avg. class size: 40 students
Sports: 4 | Extracurriculars: 7
Episcopal
4041 Main St
Kansas City, MO 64111
(816) 931-8614
(10)
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The College School Photo
The College School
Gr: PK-8
Avg. class size: 20 students
Sports: 4 | Extracurriculars: 15
Alternative School
7825 Big Bend Blvd.
Saint Louis, MO 63119
(314) 962-9355
(9)
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Academy Of The Sacred Heart Photo
Academy Of The Sacred Heart
Gr: K-8 | 195 students
Avg. class size: 13 students
Sports: 5 | Extracurriculars: 5
Catholic
619 N 2nd St
Saint Charles, MO 63301
(636) 946-6127
(9)
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Chaminade College Prep School Photo
Chaminade College Prep School
Gr: 6-12 | 836 students
Avg. class size: 17 students
Sports: 20 | Extracurriculars: 31
All-boys (Catholic)
425 S. Lindbergh Blvd
Saint Louis, MO 63131
(314) 993-4400
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Chesterfield Day School Photo
Chesterfield Day School
Gr: K-5 | 62 students
Avg. class size: 8 students
Sports: 10 | Extracurriculars: 6
Montessori School
1100 White Road
Chesterfield, MO 63017
(314) 469-9622
(6)
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Chesterfield Montessori School Photo
Chesterfield Montessori School
Gr: NS-8
Avg. class size: 24 students
Extracurriculars: 11
Montessori School
14000 Ladue Road
Chesterfield, MO 63017
(314) 469-7150
(7)
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Churchill Center & School Photo
Churchill Center & School
Gr: 2-8 | 155 students
Avg. class size: 9 students
Specialized Curriculum
1021 Municipal Center Dr
Saint Louis, MO 63131
(314) 997-4343
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City Academy Photo
City Academy
Gr: PK-6 | 242 students
Avg. class size: 14 students
Sports: 2 | Extracurriculars: 8
4175 N Kingshighway Blvd
Saint Louis, MO 63115
(314) 382-0085
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Columbia Independent School Photo
Columbia Independent School
Gr: PK-12 | 476 students
Avg. class size: 16 students
Sports: 9 | Extracurriculars: 24
1801 N Stadium Blvd
Columbia, MO 65202
(573) 777-9250
(3)
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Community School Photo
Community School
Gr: PK-6 | 350 students
Avg. class size: 20 students
Sports: 3
900 Lay Road
Saint Louis, MO 63124
(314) 991-0005
(6)
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Map of MAP St. Louis
MAP St. Louis
Gr: 7-12
Avg. class size: 8 students
Montessori School
3840 Washington Blvd.
Saint Louis, MO 63108
(314) 391-2994
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MICDS (Mary Institute and St. Louis Country Day School) Photo
MICDS (Mary Institute and St. Louis Country Day School)
Gr: PK-12 | 1,236 students
Avg. class size: 16 students
Sports: 20 | Extracurriculars: 3
101 North Warson Road
Saint Louis, MO 63124
(314) 995-7367
(3)
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Missouri Military Academy Photo
Missouri Military Academy
Gr: 7-12 | 193 students
Avg. class size: 14 students
Sports: 15 | Extracurriculars: 25
All-boys
204 N Grand St
Mexico, MO 65265
(573) 581-1776
(1)
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New City School Photo
New City School
Gr: NS-6 | 296 students
Avg. class size: 12 students
Sports: 5 | Extracurriculars: 6
Specialized Curriculum
5209 Waterman Blvd
Saint Louis, MO 63108
(314) 361-6411
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Notre Dame De Sion Grade School Photo
Notre Dame De Sion Grade School
Gr: PK-8 | 310 students
Avg. class size: 15 students
Sports: 4 | Extracurriculars: 6
Catholic
3823 Locust Street
Kansas City, MO 64109
(816) 683-7063
(2)
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Notre Dame de Sion High School Photo
Notre Dame de Sion High School
Gr: 9-12 | 311 students
Avg. class size: 16 students
Sports: 15 | Extracurriculars: 18
Catholic
10631 Wornall Road
Kansas City, MO 64114
(816) 942-3282
(3)
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Oakhill Day School Photo
Oakhill Day School
Gr: PK-8 | 429 students
Avg. class size: 13 students
Sports: 4 | Extracurriculars: 9
7019 North Cherry Street
Kansas City, MO 64118
(816) 436-6228
(1)
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Pembroke Hill School Photo
Pembroke Hill School
Gr: NS-12 | 1,181 students
Avg. class size: 16 students
Sports: 17 | Extracurriculars: 60
400 W 51st St
Kansas City, MO 64112
(816) 936-1200
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Rossman School Photo
Rossman School
Gr: PK-6 | 239 students
Avg. class size: 29 students
Sports: 5 | Extracurriculars: 7
12660 Conway Road
Saint Louis, MO 63141
(314) 434-5877
(27)
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Frequently Asked Questions

What are the top ranked private schools belonging to Independent Schools Association of the Central States (ISACS) in Missouri?
The top ranked private schools belonging to Independent Schools Association of the Central States (ISACS) in Missouri include Thomas Jefferson School, MICDS (Mary Institute and St. Louis Country Day School), and Pembroke Hill School.
How many private schools belonging to Independent Schools Association of the Central States (ISACS) are located in Missouri?
35 private schools belonging to Independent Schools Association of the Central States (ISACS) are located in Missouri.
How much do private schools belonging to Independent Schools Association of the Central States (ISACS) cost in Missouri?
The average tuition cost is $24,888, which is higher than the Missouri private school average tuition cost of $12,905.
How diverse are private schools belonging to Independent Schools Association of the Central States (ISACS) in Missouri?
Missouri private schools belonging to Independent Schools Association of the Central States (ISACS) are approximately 26% minority students, which is higher than the Missouri private school average of 21%.
What percentage of private schools belonging to Independent Schools Association of the Central States (ISACS) are religiously affiliated in Missouri?
29% of private schools belonging to Independent Schools Association of the Central States (ISACS) in Missouri are religiously affiliated (most commonly Catholic and Episcopal).
35
Private Schools
11,427
Students
$24,888
Avg. Tuition
26%
Students of Color
8:1
Student-Teacher Ratio

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