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Best Massachusetts Private Schools Belonging to Membership Associations (2026)

For the 2026 school year, there are 586 private schools belonging to membership associations in Massachusetts.
The most popular school membership associations are Association of Independent Schools in New England (AISNE) (23% of schools), National Association of Independent Schools (NAIS) (21% of schools) and National Catholic Educational Association (NCEA) (20% of schools).

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

Membership Association
# Schools
# Students
% Minority
Accelerated Christian Education (ACE) or (School of Tomorrow)
3
43
34%
Alabama Association of Independent Schools (AAIS)
1
42
26%
Alternative School Network
1
32
19%
American Association of Christian Schools (AACS)
3
80
80%
American Montessori Society (AMS)
41
4,824
34%
Association Montessori International (AMI)
7
658
42%
Association Montessori Internationale (AMI)
1
52
-
Association of Christian Schools International (ACSI)
25
4,166
36%
Association of Christian Teachers and Schools (ACTS)
2
401
36%
Association of Classical and Christian Schools (ACCS)
2
522
8%
Association of Independent Schools in New England (AISNE)
133
36,439
26%
Association of Waldorf Schools of North America
5
637
11%
Christian Schools International (CSI)
3
980
32%
Cognia
4
173
2%
Council of Bilingual Education
1
31
15%
Educational Records Bureau
3
572
10%
European Council for International Schools
3
163
34%
Friends Council on Education (FCE)
1
-
-
General Conference of the Seventh Day Adventist Church (GCSDAC)
4
702
77%
Institute for Independent Education
3
143
22%
International Baccalaureate (IB) World School
3
1,320
15%
International Boys Schools Coalition
3
1,401
36%
International Coalition of Girls Schools
1
381
14%
International Montessori Council (IMC)
1
34
-
Islamic School League of America (ISLA)
4
466
63%
Jesuit Secondary Education Association (JSEA)
4
505
46%
Learning Disabilities Association of America (LDA)
2
484
8%
Middle States Association of Colleges and Secondary Schools
1
50
-
National Association for the Education of Young Children
113
9,253
46%
National Association for the Gifted
1
96
20%
National Association of College Admissions Counselors
4
1,285
19%
National Association of Episcopal Schools (NAES)
5
1,651
52%
National Association of Independent Schools (NAIS)
123
35,794
26%
National Association of Laboratory Schools
3
344
39%
National Association of Private Catholic and Independent Schools (NAPCIS)
1
245
27%
National Association of Private Special Education Centers
13
981
24%
National Catholic Education Association
3
1,090
8%
National Catholic Educational Association (NCEA)
116
36,158
29%
National Coalition of Alternative Community Schools
2
175
47%
National Coalition of Boys Schools
2
855
41%
National Coalition of Girls
14
4,418
22%
National Council for Private School Accreditation
2
149
49%
National Independent Private Schools Association
7
1,707
29%
National Junior Honor Society (NJHS)
1
249
31%
National Middle School Association
1
424
5%
National Society of Hebrew Day Schools (NSHDS)
3
292
-
New England Association of Schools and Colleges
110
34,033
28%
New Jersey Association of Independent Schools
1
93
30%
Northwest Association of Accredited Schools
1
200
24%
Not Available (School did not report any membership associatons).
1
200
24%
Other associations(s) for exceptional children
26
1,644
27%
Other Montessori association(s)
26
1,777
29%
Other religious school association(s)
17
2,239
40%
Other school association(s)
90
14,185
33%
Other special emphasis association(s)
33
3,810
45%
Prizmah: Center for Jewish Day Schools
1
242
6%
Solomon Schechter Day Schools (SSDS)
3
737
4%
State or regional independent school association
33
4,878
32%
The Association of Boarding Schools (TABS)
26
8,345
29%
Waldorf Early Childhood Association of North America
1
117
6%
Xaverian Brothers School Sponsorship
1
762
37%

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