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Best Oklahoma Private Schools Belonging to Membership Associations (2026)

Top-Ranked Oklahoma 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
320
20%
Accelerated Christian Education (ACE) or (School of Tomorrow)
8
509
29%
American Association of Christian Schools (AACS)
2
130
27%
American Montessori Society (AMS)
5
496
19%
Association of Christian Schools International (ACSI)
35
8,718
15%
Association of Christian Teachers and Schools (ACTS)
7
2,719
28%
Association of Classical and Christian Schools (ACCS)
4
1,265
18%
Bilingual School Association
1
91
70%
Christian Schools International (CSI)
3
481
8%
Cognia
10
5,514
30%
General Conference of SDA Church
1
12
100%
General Conference of the Seventh Day Adventist Church (GCSDAC)
4
145
59%
Independent Schools Association of the South West (ISAS)
5
4,250
21%
Institute for Independent Education
2
115
65%
International Montessori Council (IMC)
1
67
14%
Islamic School League of America (ISLA)
1
240
66%
Jesuit Secondary Education Association (JSEA)
1
160
90%
Middle States Association of Colleges and Secondary Schools
1
940
11%
National Association for the Education of Young Children
10
1,443
21%
National Association of College Admissions Counselors
1
1,032
15%
National Association of Episcopal Schools (NAES)
3
1,413
38%
National Association of Independent Schools (NAIS)
6
3,369
27%
National Association of Laboratory Schools
2
297
23%
National Association of Private Schools
1
30
78%
National Association of Secondary School Principals
1
213
12%
National Catholic Education Association
1
140
97%
National Catholic Educational Association (NCEA)
30
8,119
33%
National Christian School Association (NCSA)
2
548
29%
National Coalition of Girls
1
116
35%
National Council for Private School Accreditation
2
1,007
11%
National Honor Society (NHS)
1
213
12%
National Independent Private Schools Association
3
100
52%
National Lutheran Schools Accreditation
3
321
20%
Oral Roberts University Educational Fellowship (ORUEF)
10
2,600
35%
Other associations(s) for exceptional children
4
328
67%
Other religious school association(s)
17
4,187
23%
Other school association(s)
33
7,631
27%
Other special emphasis association(s)
5
1,800
15%
Solomon Schechter Day Schools (SSDS)
2
635
23%
Southern Association of Independent Schools
1
810
20%
State or regional independent school association
7
3,442
20%

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