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

For the 2026-27 school year, there are 94 private schools belonging to membership associations in Idaho.
The most popular school membership associations are Other school association(s) (17% of schools), Association of Christian Schools International (ACSI) (15% of schools) and National Catholic Educational Association (NCEA) (14% of schools).

Quick Facts (2026-27)

  • # Private Schools: 94

Quick Facts (2026-27)

  • # Private Schools: 94

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

Membership Association
# Schools
# Students
% Minority
Accelerated Christian Education (ACE) or (School of Tomorrow)
2
249
35%
American Association of Christian Schools (AACS)
1
133
4%
American Montessori Society (AMS)
4
431
19%
Association Montessori International (AMI)
2
115
26%
Association of Christian Schools International (ACSI)
14
4,989
10%
Association of Christian Teachers and Schools (ACTS)
3
334
11%
Association of Classical and Christian Schools (ACCS)
4
1,842
9%
Association of Waldorf Schools of North America
1
196
2%
Cognia
9
2,616
14%
General Conference of the Seventh Day Adventist Church (GCSDAC)
9
445
17%
International Baccalaureate (IB) World School
1
355
18%
International Montessori Council (IMC)
1
91
9%
National Association for the Education of Young Children
6
391
18%
National Association of College Admissions Counselors
1
355
18%
National Association of Independent Schools (NAIS)
5
1,511
10%
National Association of Laboratory Schools
1
42
33%
National Catholic Educational Association (NCEA)
13
3,241
24%
National Christian School Association (NCSA)
1
56
3%
National Independent Private Schools Association
2
37
25%
National Lutheran Schools Accreditation
1
65
8%
Northwest Association of Accredited Schools
9
3,237
12%
Other associations(s) for exceptional children
2
260
5%
Other Montessori association(s)
4
371
19%
Other religious school association(s)
7
717
18%
Other school association(s)
16
1,715
19%
Other special emphasis association(s)
2
37
25%
Southern Baptist Association of Christian Schools (SBACS)
4
445
24%
State or regional independent school association
3
170
7%
The Association of Boarding Schools (TABS)
1
42
15%
Waldorf Early Childhood Association of North America
1
196
2%

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