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Best Indiana Private Schools Belonging to Membership Associations (2026)

For the 2026 school year, there are 500 private schools belonging to membership associations in Indiana.
The most popular school membership associations are National Catholic Educational Association (NCEA) (31% of schools), Other school association(s) (20% of schools) and Association of Christian Schools International (ACSI) (12% of schools).

Top-Ranked Indiana Private Schools by Membership Association (2026)

Membership Association
# Schools
# Students
% Minority
AdvancED, Southern Association of Colleges and Schools, Council on Accreditation and School Improvement
1
312
65%
Accelerated Christian Education (ACE) or (School of Tomorrow)
21
949
29%
American Association of Christian Schools (AACS)
24
3,782
27%
American Montessori Society (AMS)
23
2,734
29%
Association Montessori International (AMI)
4
155
18%
Association of Christian Schools International (ACSI)
62
17,804
19%
Association of Christian Teachers and Schools (ACTS)
7
652
35%
Association of Classical and Christian Schools (ACCS)
5
376
23%
Association of Military Colleges and Schools
1
832
28%
Bilingual School Association
1
515
21%
Christian Schools International (CSI)
11
3,986
17%
Cognia
42
18,452
21%
Council of Bilingual Education
7
330
-
Educational Records Bureau
1
895
15%
European Council for International Schools
2
341
76%
Evangelical Lutheran Education Association (ELEA)
4
450
40%
Friends Council on Education (FCE)
1
80
25%
General Conference of SDA Church
1
53
100%
General Conference of the Seventh Day Adventist Church (GCSDAC)
7
289
75%
Independent Schools Association of the Central States (ISACS)
18
8,958
30%
Institute for Independent Education
5
929
47%
International Baccalaureate (IB) World School
1
550
55%
International Montessori Council (IMC)
3
321
22%
Islamic School League of America (ISLA)
1
197
13%
Jesuit Secondary Education Association (JSEA)
1
841
29%
Lake Michigan Association of Independent Schools (LMAIS)
2
418
43%
Learning Disabilities Association of America (LDA)
1
101
14%
National Association for the Education of Young Children
37
4,934
27%
National Association for the Gifted
1
396
47%
National Association of College Admissions Counselors
1
-
-
National Association of Episcopal Schools (NAES)
3
891
34%
National Association of Independent Schools (NAIS)
23
9,023
30%
National Association of Laboratory Schools
4
339
50%
National Association of Private Catholic and Independent Schools (NAPCIS)
1
481
44%
National Association of Private Special Education Centers
2
799
22%
National Catholic Education Association
3
1,174
6%
National Catholic Educational Association (NCEA)
155
47,289
27%
National Christian School Association (NCSA)
3
273
18%
National Coalition of Girls
1
39
73%
National Independent Private Schools Association
11
928
45%
National Junior Honor Society (NJHS)
1
823
16%
National Lutheran Schools Accreditation
18
3,097
22%
National Society of Hebrew Day Schools (NSHDS)
4
299
1%
Orton Gillingham Academy of Practioners and Educators
1
101
14%
Other associations(s) for exceptional children
5
429
39%
Other Montessori association(s)
10
1,016
35%
Other religious school association(s)
35
4,751
16%
Other school association(s)
100
21,954
21%
Other special emphasis association(s)
22
2,310
20%
Solomon Schechter Day Schools (SSDS)
2
61
25%
Southern Baptist Association of Christian Schools (SBACS)
1
21
-
State or regional independent school association
35
9,512
24%
The Association of Boarding Schools (TABS)
2
1,037
29%

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