For the 2025-26 school year, there are 7 private schools belonging to NWAIS (Northwest Association of Independent Schools) serving 2,465 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 The Delphian School, Oregon Episcopal School, and The Marylhurst School.
The average acceptance rate is 64%, which is lower than the Oregon private school average acceptance rate of 83%.
14% of private schools belonging to NWAIS (Northwest Association of Independent Schools) in Oregon are religiously affiliated (most commonly Episcopal).
Top Ranked Private Schools Belonging to NWAIS (Northwest Association of Independent Schools) in Oregon (2025-26)
School
Location
Quick Facts
20950 South West Rock Creek Road
Sheridan, OR 97378
(503) 843-3521
Sheridan, OR 97378
(503) 843-3521
Gr: K-12 | 229 students Avg. class size: 13 students Sports: 6 | Extracurrculars: 36 Tuition & acceptance rate listed
15544 S Clackamas River Dr
Oregon City, OR 97045
(503) 650-0978
Oregon City, OR 97045
(503) 650-0978
Gr: NS-8 | 126 students Avg. class size: 14 students Extracurrculars: 1 Tuition & acceptance rate listed
6300 SW Nicol Road
Portland, OR 97223
(503) 768-3115
Portland, OR 97223
(503) 768-3115
Gr: PK-12 | 866 students Avg. class size: 16 students Sports: 10 | Extracurrculars: 24 Tuition & acceptance rate listed
6974 Bates Rd SE
Salem, OR 97306
(503) 399-9020
Salem, OR 97306
(503) 399-9020
Gr: NS-8 | 191 students Avg. class size: 18 students Sports: 3 | Extracurrculars: 6 Tuition listed
3030 SW 2nd Ave
Portland, OR 97201
(503) 245-1477
Portland, OR 97201
(503) 245-1477
Gr: PK-8 | 248 students Avg. class size: 24 students Sports: 2 | Extracurrculars: 8 Tuition & acceptance rate listed
8500 NW Johnson Street
Portland, OR 97229
(503) 292-7776
Portland, OR 97229
(503) 292-7776
Gr: NS-8 | 571 students Avg. class size: 15 students Sports: 5 | Extracurrculars: 17 Tuition listed
1130 SW Main Street
Portland, OR 97205
(503) 223-3367
Portland, OR 97205
(503) 223-3367
Gr: 6-12 | 234 students Avg. class size: 12 students Sports: 2 | Extracurrculars: 19 Tuition & acceptance rate listed
Recent Articles
Transferring from Public to Private School Mid-Year: What to Expect
Considering a mid-year transfer from public to private school? Learn what to expect with admissions, academic placement, social adjustment, and financial aid to ensure a smooth transition.
A Guide to Day vs. Boarding School: Which Is Right for Your Family
Discover the key differences between day and boarding schools to determine the best fit for your child. Explore benefits, costs, lifestyle factors, and questions to help guide your family’s decision.
The A to Z of Private Schools 2025
Explore the A to Z of private schools in 2025—from admissions to tuition—offering parents and educators clear insights into today’s options.
