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Best Delaware Private Schools Belonging to Membership Associations (2026-27)

For the 2026-27 school year, there are 82 private schools belonging to membership associations in Delaware.
The most popular school membership associations are National Association of Independent Schools (NAIS) (22% of schools), National Association for the Education of Young Children (18% of schools) and National Catholic Educational Association (NCEA) (17% of schools).

Quick Facts (2026-27)

  • # Private Schools: 82

Quick Facts (2026-27)

  • # Private Schools: 82

Top Ranked Delaware Private Schools by Membership Association (2026-27)

Membership Association
# Schools
# Students
% Minority
Accelerated Christian Education (ACE) or (School of Tomorrow)
2
70
100%
American Association of Christian Schools (AACS)
5
717
46%
American Montessori Society (AMS)
6
995
36%
Association Montessori International (AMI)
1
39
79%
Association of Baptist Christian Schools (ABCS)
1
156
12%
Association of Christian Schools International (ACSI)
10
3,157
20%
Association of Christian Teachers and Schools (ACTS)
1
184
13%
Association of Classical and Christian Schools (ACCS)
1
215
-
Association of Delaware Valley Independent Schools
3
1,105
23%
Association of Delaware Valley Independent Schools (ADVIS)
8
3,625
23%
Children and Adults with Attention Deficit or Hyperactivity Disorder (CHADD)
1
97
20%
Council of Bilingual Education
1
28
-
Delaware Association of Independent Schools
12
4,935
25%
Educational Records Bureau
1
162
49%
European Council for International Schools
2
143
-
Friends Council on Education (FCE)
1
709
18%
General Conference of the Seventh Day Adventist Church (GCSDAC)
2
90
84%
International Baccalaureate (IB) World School
1
709
18%
International Boys Schools Coalition
1
162
18%
Learning Disabilities Association of America (LDA)
1
97
20%
Mid Atlantic Christian Schools Association (MACSA)
3
893
16%
Middle States Association of Colleges and Secondary Schools
11
5,175
25%
MSA-CESS Middle States Association Commissions on Elementary and Secondary Schools
3
359
31%
National Association for the Education of Young Children
15
1,132
21%
National Association of Episcopal Schools (NAES)
4
791
38%
National Association of Independent Schools (NAIS)
18
5,890
28%
National Association of Private Catholic and Independent Schools (NAPCIS)
1
91
14%
National Association of Private Special Education Centers
1
-
-
National Catholic Educational Association (NCEA)
14
6,471
16%
National Coalition of Girls
1
441
-
National Council for Private School Accreditation
1
162
49%
National Independent Private Schools Association
1
31
100%
Other Montessori association(s)
1
84
47%
Other religious school association(s)
4
451
28%
Other school association(s)
10
2,454
25%
Other special emphasis association(s)
5
467
46%
Pennsylvania Association of Independent Schools (PAIS)
4
2,261
32%
Progressive Education Network
1
63
25%
Solomon Schechter Day Schools (SSDS)
1
31
100%
The Association of Boarding Schools (TABS)
1
318
45%
The Jewish Community Day School Association (SSDSA)
1
35
9%

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