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The Delphian School Top 3 · Highest Avg. ACT Score (OR)
Abiqua School
The Marylhurst School

Best Oregon Private Schools Belonging to NWAIS (Northwest Association of Independent Schools) (2026)

For the 2026 school year, there are 7 private schools belonging to NWAIS (Northwest Association of Independent Schools) serving 2,455 students in Oregon. You can also find more schools membership associations in Oregon.
The top ranked private schools belonging to NWAIS (Northwest Association of Independent Schools) in Oregon include Abiqua School, The Delphian School, and Oregon Episcopal School.
The average acceptance rate is 80%, which is lower than the Oregon private school average acceptance rate of 85%.
14% of private schools belonging to NWAIS (Northwest Association of Independent Schools) in Oregon are religiously affiliated (most commonly Episcopal).

Quick Facts (2026)

  • # Private Schools: 7

Quick Facts (2026)

  • # Private Schools: 7

Top Ranked Private Schools Belonging to NWAIS (Northwest Association of Independent Schools) in Oregon (2026)

Abiqua School Photo
Abiqua School
Gr: NS-8 | 226 students
Avg. class size: 20 students
Sports: 6 | Extracurriculars: 6
6974 Bates Rd SE
Salem, OR 97306
(503) 399-9020
(5)
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The Delphian School Photo
The Delphian School
Gr: K-12 | 229 students
Avg. class size: 13 students
Sports: 6 | Extracurriculars: 36
Alternative School
20950 South West Rock Creek Road
Sheridan, OR 97378
(503) 843-3521
(6)
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Oregon Episcopal School Photo
Oregon Episcopal School
Gr: PK-12 | 861 students
Avg. class size: 16 students
Sports: 10 | Extracurriculars: 59
Episcopal
6300 SW Nicol Road
Portland, OR 97223
(503) 768-3115
(5)
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The Marylhurst School Photo
The Marylhurst School
Gr: NS-8 | 111 students
Avg. class size: 14 students
Extracurriculars: 1
Specialized Curriculum
15544 S Clackamas River Dr
Oregon City, OR 97045
(503) 650-0978
(2)
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Cedarwood Waldorf School Photo
Cedarwood Waldorf School
Gr: PK-8 | 248 students
Avg. class size: 24 students
Sports: 2 | Extracurriculars: 8
Specialized Curriculum
3030 SW 2nd Ave
Portland, OR 97201
(503) 245-1477
(1)
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French International School of Oregon Photo
French International School of Oregon
Gr: NS-8 | 570 students
Avg. class size: 15 students
Sports: 5 | Extracurriculars: 17
Specialized Curriculum
8500 NW Johnson Street
Portland, OR 97229
(503) 292-7776
(9)
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Northwest Academy Photo
Northwest Academy
Gr: 6-12 | 210 students
Avg. class size: 12 students
Sports: 2 | Extracurriculars: 20
1130 SW Main Street
Portland, OR 97205
(503) 223-3367
(3)
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Frequently Asked Questions

What are the top ranked private schools belonging to NWAIS (Northwest Association of Independent Schools) in Oregon?
The top ranked private schools belonging to NWAIS (Northwest Association of Independent Schools) in Oregon include Abiqua School, The Delphian School, and Oregon Episcopal School.
How many private schools belonging to NWAIS (Northwest Association of Independent Schools) are located in Oregon?
7 private schools belonging to NWAIS (Northwest Association of Independent Schools) are located in Oregon.
How diverse are private schools belonging to NWAIS (Northwest Association of Independent Schools) in Oregon?
Oregon private schools belonging to NWAIS (Northwest Association of Independent Schools) are approximately 29% minority students, which is higher than the Oregon private school average of 26%.
What percentage of private schools belonging to NWAIS (Northwest Association of Independent Schools) are religiously affiliated in Oregon?
14% of private schools belonging to NWAIS (Northwest Association of Independent Schools) in Oregon are religiously affiliated (most commonly Episcopal).
7
Private Schools
2,455
Students
$24,359
Avg. Tuition
29%
Students of Color
7:1
Student-Teacher Ratio

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