Private School Review - Established 2003
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Delaware Private Schools Belonging to Membership Associations

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), Middle States Association Commissions on Elementary and Secondary Schools (MSA-CESS) (18% of schools) and National Association for the Education of Young Children (NAEYC) (18% of schools).

Quick Facts (26-27)

  • # Private Schools: 82

Quick Facts (26-27)

  • # Private Schools: 82

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

Membership Association
# Schools
# Students
% Minority
Accelerated Christian Education (School of Tomorrow) (ACE)
2
70
100%
American Association of Christian Schools (AACS)
5
717
46%
American Montessori Society (AMS)
6
990
38%
Association Montessori Internationale (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 Christian Schools (ACCS)
1
227
-
Association of Delaware Valley Independent Schools (ADVIS)
10
4,584
23%
Children and Adults with Attention Deficit or Hyperactivity Disorder (CHADD)
1
97
20%
Council of Bilingual Education (PVSR legacy category)
1
28
-
Delaware Association of Independent Schools (DAIS)
12
4,918
26%
Educational Collaborative for International Schools (ECIS)
2
143
-
Friends Council on Education (FCE)
1
709
18%
General Conference of Seventh-day Adventists (Education) (GCSDAC)
2
90
84%
International Baccalaureate World School (IB)
1
709
18%
International Boys' Schools Coalition (IBSC)
1
162
18%
International Coalition of Girls' Schools (formerly NCGS) (ICGS)
1
441
-
Learning Disabilities Association of America (LDA)
1
97
20%
Mid Atlantic Christian Schools Association (MACSA)
3
893
16%
Middle States Association Commissions on Elementary and Secondary Schools (MSA-CESS)
15
5,826
25%
National Association for the Education of Young Children (NAEYC)
15
1,132
21%
National Association of Episcopal Schools (NAES)
4
791
38%
National Association of Independent Schools (NAIS)
18
5,899
28%
National Association of Private Catholic and Independent Schools (NAPCIS)
1
91
14%
National Association of Private Special Education Centers (NAPSEC)
1
-
-
National Catholic Educational Association (NCEA)
14
6,483
16%
National Council for Private School Accreditation (NCPSA)
1
162
49%
National Independent Private School Association (NIPSA)
1
31
100%
Other Montessori association(s)
1
84
47%
Other religious school association(s)
4
451
28%
Other school association(s)
10
2,466
25%
Other special emphasis association(s)
5
467
46%
Pennsylvania Association of Independent Schools (PAIS)
4
2,270
33%
Prizmah: Center for Jewish Day Schools (absorbed SSDSA) (Prizmah)
1
35
9%
Progressive Education Network (PEN)
1
63
25%
Solomon Schechter Day Schools (SSDS)
1
31
100%
The Association of Boarding Schools (TABS)
1
318
45%

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