Private School Review - Established 2003
Bridges Middle School Photo
Bridges Middle School

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

For the 2025-26 school year, there are 292 private schools belonging to membership associations in Oregon.
The most popular school membership associations are Association of Christian Schools International (ACSI) (19% of schools), Other school association(s) (17% of schools) and National Catholic Educational Association (NCEA) (16% of schools).

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

Membership Association
# Schools
# Students
% Minority
AdvancED, Southern Association of Colleges and Schools, Council on Accreditation and School Improvement
2
238
26%
Accelerated Christian Education (ACE) or (School of Tomorrow)
5
258
8%
Accreditation International
1
52
15%
American Association of Christian Schools (AACS)
3
365
36%
American Montessori Society (AMS)
8
689
29%
Association Montessori International (AMI)
5
617
23%
Association Montessori Internationale (AMI)
4
790
28%
Association of Christian Schools International (ACSI)
55
11,296
17%
Association of Christian Teachers and Schools (ACTS)
4
391
18%
Association of Classical and Christian Schools (ACCS)
5
831
30%
Association of Waldorf Schools of North America
9
1,398
10%
Christian Schools International (CSI)
3
298
17%
Cognia
36
9,712
20%
Council of Bilingual Education
1
106
-
European Council for International Schools
2
124
27%
Evangelical Lutheran Education Association (ELEA)
4
193
11%
General Conference of SDA Church
1
13
33%
General Conference of the Seventh Day Adventist Church (GCSDAC)
24
1,607
23%
International Baccalaureate (IB) World School
4
1,630
33%
Islamic School League of America (ISLA)
1
74
68%
Jesuit Secondary Education Association (JSEA)
1
1,299
44%
Middle States Association of Colleges and Secondary Schools
2
524
30%
National Association for the Education of Young Children
27
2,412
30%
National Association of Episcopal Schools (NAES)
1
866
23%
National Association of Independent Schools (NAIS)
17
5,516
29%
National Association of Private Schools
2
312
43%
National Association of Private Special Education Centers
1
49
23%
National Catholic Education Association
2
376
56%
National Catholic Educational Association (NCEA)
48
12,508
28%
National Council for Private School Accreditation
1
238
26%
National Honor Society (NHS)
1
377
37%
National Independent Private Schools Association
7
804
17%
National Lutheran Schools Accreditation
2
722
16%
National Society of Hebrew Day Schools (NSHDS)
1
84
-
Northwest Association of Accredited Schools
23
5,305
25%
NWAIS (Northwest Association of Independent Schools)
7
2,485
20%
Other associations(s) for exceptional children
3
330
29%
Other Montessori association(s)
19
1,171
25%
Other religious school association(s)
16
2,729
27%
Other school association(s)
49
6,997
34%
Other special emphasis association(s)
10
1,728
33%
Prizmah: Center for Jewish Day Schools
1
84
-
Progressive Education Network
1
111
17%
Society For Classical Learning
1
286
33%
State or regional independent school association
13
2,741
33%
The Association of Boarding Schools (TABS)
2
271
37%
The French school system abroad (AEFE)
2
218
21%
Waldorf Early Childhood Association of North America
4
649
7%
Western Association of Schools and Colleges (WASC)
3
980
21%
Wisconsin Evangelical Lutheran Synod School Accreditation (WELSSA)
1
96
30%

Recent Articles

Student Success Predictors at Community Colleges
Student Success Predictors at Community Colleges
A practical guide to student success predictors at community colleges for private school advisors helping graduates navigate two-year pathways.
Career Pathways with Community College for Private School Grads
Career Pathways with Community College for Private School Grads
Explore top career pathways with community college for private school graduates, including high-demand jobs, transfer options, and 2025 workforce trends.
Navigating the FAFSA & Financial Aid Timeline for Community College
Navigating the FAFSA & Financial Aid Timeline for Community College
Learn how to navigate FAFSA and financial aid timelines when starting at community college — from application to disbursement in 2025.

Quick Links

SCHOOL SEARCH TOOLS:
SCHOOL BY TYPE (OR):
OPEN-HOUSES & JOBS:
PUBLIC & BOARDING SCHOOLS:
PRIVATE SCHOOL DATA:

Most Popular Articles

School Rankings by Category
School Rankings by Category
 Free Schools
Free Schools
Waldorf Schools
Waldorf Schools
 A Parent’s Guide to Private School Entrance Exams
A Parent’s Guide to Private School Entrance Exams
 5 Facts About Reggio Emilia
5 Facts About Reggio Emilia

More Articles

Timeless School Insights
The Journey to Enrollment
Funding the Future
Global Educator Empowerment
Pathways to Elite Colleges