Private School Review - Established 2003
Countryside Montessori School Photo
Countryside Montessori School

Best Missouri Private Schools Belonging to Membership Associations (2025-26)

For the 2025-26 school year, there are 467 private schools belonging to membership associations in Missouri.
The most popular school membership associations are National Catholic Educational Association (NCEA) (37% of schools), Other school association(s) (16% of schools) and Association of Christian Schools International (ACSI) (11% of schools).

Top Ranked Missouri Private Schools by Membership Association (2025-26)

Membership Association
# Schools
# Students
% Minority
AdvancED, Southern Association of Colleges and Schools, Council on Accreditation and School Improvement
2
1,027
15%
Accelerated Christian Education (ACE) or (School of Tomorrow)
21
850
36%
Alternative School Network
3
131
56%
American Association of Christian Schools (AACS)
17
1,141
18%
American Montessori Society (AMS)
20
2,285
18%
Association Montessori International (AMI)
4
279
13%
Association Montessori Internationale (AMI)
4
357
38%
Association of Christian Schools International (ACSI)
51
10,560
20%
Association of Christian Teachers and Schools (ACTS)
8
1,134
18%
Association of Classical and Christian Schools (ACCS)
4
984
16%
Association of Military Colleges and Schools
1
193
30%
Association of Waldorf Schools of North America
1
74
10%
Christian Schools International (CSI)
11
1,169
37%
Cognia
39
11,321
26%
Council of Bilingual Education
1
272
13%
Educational Records Bureau
4
1,070
31%
European Council for International Schools
1
100
17%
Evangelical Lutheran Education Association (ELEA)
5
565
61%
General Conference of the Seventh Day Adventist Church (GCSDAC)
10
334
54%
Independent Schools Association of the Central States (ISACS)
36
11,686
25%
Institute for Independent Education
3
1,100
75%
International Baccalaureate (IB) World School
1
-
-
International Coalition of Girls Schools
2
1,203
10%
Islamic School League of America (ISLA)
1
333
80%
Jesuit Secondary Education Association (JSEA)
3
2,591
16%
Middle States Association of Colleges and Secondary Schools
1
216
4%
Montessori Educational Programs International (MEPI)
1
129
32%
MSA-CESS Middle States Association Commissions on Elementary and Secondary Schools
1
220
35%
National Association for the Education of Young Children
31
4,717
23%
National Association of Episcopal Schools (NAES)
4
1,217
49%
National Association of Independent Schools (NAIS)
36
13,077
29%
National Association of Laboratory Schools
3
461
40%
National Association of Private Catholic and Independent Schools (NAPCIS)
2
108
9%
National Association of Private Schools
1
279
22%
National Association of Private Special Education Centers
4
388
33%
National Catholic Education Association
2
596
10%
National Catholic Educational Association (NCEA)
175
46,966
15%
National Christian School Association (NCSA)
5
760
32%
National Coalition of Girls
1
529
7%
National Council for Private School Accreditation
2
436
20%
National Honor Society (NHS)
2
692
5%
National Independent Private Schools Association
8
2,207
13%
National Lutheran Schools Accreditation
17
4,035
11%
National Society of Hebrew Day Schools (NSHDS)
2
254
-
New Jersey Association of Independent Schools
1
134
59%
Not Available (School did not report any membership associatons).
2
99
-
Oral Roberts University Educational Fellowship (ORUEF)
3
637
24%
Other associations(s) for exceptional children
2
17
-
Other Montessori association(s)
11
912
27%
Other religious school association(s)
30
5,318
24%
Other school association(s)
74
16,948
15%
Other special emphasis association(s)
17
3,983
15%
Prizmah: Center for Jewish Day Schools
1
75
-
Solomon Schechter Day Schools (SSDS)
1
27
19%
Southern Association Of Colleges And Schools (SACS)
1
281
63%
Southern Baptist Association of Christian Schools (SBACS)
3
419
26%
State or regional independent school association
20
7,754
23%
The Association of Boarding Schools (TABS)
3
882
15%

Recent Articles

Student Success Predictors at Community Colleges
Student Success Predictors at Community Colleges
A practical guide to student success predictors at community colleges for private school advisors helping graduates navigate two-year pathways.
Career Pathways with Community College for Private School Grads
Career Pathways with Community College for Private School Grads
Explore top career pathways with community college for private school graduates, including high-demand jobs, transfer options, and 2025 workforce trends.
Navigating the FAFSA & Financial Aid Timeline for Community College
Navigating the FAFSA & Financial Aid Timeline for Community College
Learn how to navigate FAFSA and financial aid timelines when starting at community college — from application to disbursement in 2025.

Quick Links

SCHOOL SEARCH TOOLS:
SCHOOL BY TYPE (MO):
OPEN-HOUSES & JOBS:
PUBLIC & BOARDING SCHOOLS:
PRIVATE SCHOOL DATA:

Most Popular Articles

Changing Schools and Moving to New Area
Changing Schools and Moving to New Area
 They Didn't Accept My Child!
They Didn't Accept My Child!
School Rankings by Category
School Rankings by Category
 What Private School Alumni Say a Decade Later
What Private School Alumni Say a Decade Later
 For-profit vs. Not-for-profit Schools
For-profit vs. Not-for-profit Schools

More Articles

Programs for Exceptional Learners
Well-Rounded Achievements
Global Educator Empowerment
The Journey to Enrollment
Premier School Models