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

For the 2025-26 school year, there are 285 private schools belonging to membership associations in Arizona.
The most popular school membership associations are Association of Christian Schools International (ACSI) (21% of schools), National Catholic Educational Association (NCEA) (20% of schools) and Other school association(s) (13% of schools).

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

Membership Association
# Schools
# Students
% Minority
Accelerated Christian Education (ACE) or (School of Tomorrow)
4
79
76%
American Association of Christian Schools (AACS)
6
445
32%
American Montessori Society (AMS)
18
1,645
39%
Association Montessori International (AMI)
14
1,457
40%
Association Montessori Internationale (AMI)
3
348
42%
Association of Christian Schools International (ACSI)
59
16,937
21%
Association of Christian Teachers and Schools (ACTS)
2
240
23%
Association of Classical and Christian Schools (ACCS)
5
1,080
19%
Association of Colorado Independent Schools (ACIS)
1
203
16%
Association of Waldorf Schools of North America
1
223
20%
Bilingual School Association
1
587
10%
Children and Adults with Attention Deficit or Hyperactivity Disorder (CHADD)
1
167
-
Christian Schools International (CSI)
5
895
22%
Cognia
36
13,238
19%
Council of Bilingual Education
2
120
42%
Educational Records Bureau
2
2,164
22%
European Council for International Schools
2
483
16%
Evangelical Lutheran Education Association (ELEA)
6
467
37%
General Conference of SDA Church
1
16
56%
General Conference of the Seventh Day Adventist Church (GCSDAC)
6
456
72%
Independent Schools Association of the South West (ISAS)
2
915
28%
Institute for Independent Education
2
289
24%
International Montessori Council (IMC)
2
501
31%
Islamic School League of America (ISLA)
1
75
100%
Jesuit Secondary Education Association (JSEA)
2
2,037
32%
Learning Disabilities Association of America (LDA)
2
200
-
Middle States Association of Colleges and Secondary Schools
1
74
33%
National Association for the Education of Young Children
33
3,166
35%
National Association for the Gifted
1
26
46%
National Association of College Admissions Counselors
1
-
-
National Association of Episcopal Schools (NAES)
7
1,163
42%
National Association of Independent Schools (NAIS)
13
3,097
40%
National Association of Laboratory Schools
2
311
100%
National Association of Private Schools
1
273
16%
National Association of Private Special Education Centers
2
152
57%
National Catholic Education Association
1
404
47%
National Catholic Educational Association (NCEA)
56
18,595
58%
National Coalition of Alternative Community Schools
1
133
26%
National Council for Private School Accreditation
4
436
40%
National Honor Society (NHS)
1
-
-
National Independent Private Schools Association
5
1,177
33%
National Junior Honor Society (NJHS)
1
384
38%
National Lutheran Schools Accreditation
4
1,969
16%
National Society of Hebrew Day Schools (NSHDS)
3
448
1%
Northwest Association of Accredited Schools
2
50
29%
Not Available (School did not report any membership associatons).
1
91
20%
Other associations(s) for exceptional children
6
750
32%
Other Montessori association(s)
6
941
18%
Other religious school association(s)
33
9,065
45%
Other school association(s)
36
6,095
46%
Other special emphasis association(s)
8
773
45%
Pennsylvania Association of Independent Schools (PAIS)
1
110
94%
Southern Baptist Association of Christian Schools (SBACS)
2
85
40%
State or regional independent school association
6
1,620
29%
The Association of Boarding Schools (TABS)
2
99
32%
Waldorf Early Childhood Association of North America
1
223
20%
Western Association of Schools and Colleges (WASC)
8
1,586
48%
Wisconsin Evangelical Lutheran Synod School Accreditation (WELSSA)
2
336
17%

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