Private School Review - Established 2003
Oregon Episcopal School Photo - Our beautiful 59-acre campus provides the perfect setting for open minds to inquire, explore, and grow in order to succeed in an ever-changing global community.
Oregon Episcopal School

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

For the 2026 school year, there are 3 private high schools belonging to NWAIS (Northwest Association of Independent Schools) serving 1,329 students in Oregon. You can also find more schools membership associations in Oregon.
The top-ranked private high schools belonging to NWAIS (Northwest Association of Independent Schools) in Oregon include The Delphian School, Northwest Academy, and Oregon Episcopal School.
The average acceptance rate is 52%, which is lower than the Oregon private high school average acceptance rate of 81%.
33% of private high schools belonging to NWAIS (Northwest Association of Independent Schools) in Oregon are religiously affiliated (most commonly Episcopal).

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

School
Location
Quick Facts
The Delphian School
The Delphian School Photo - Delphian is on 720 acres in the beautiful coastal mountains of the Pacific Northwest in Oregon. Here teachers don't lecture in front of a blackboard while students frantically take notes. At our school, students learn at their own pace and study independently with a personalized program that is specifically designed to satisfy their specific needs and interests.
Alternative School
(6)
20950 South West Rock Creek Road
Sheridan, OR 97378
(503) 843-3521
Gr: K-12 | 229 students Avg. class size: 13 students Sports: 6 | Extracurrculars: 36 Tuition & acceptance rate listed
Oregon Episcopal School
Oregon Episcopal School Photo - Our beautiful 59-acre campus provides the perfect setting for open minds to inquire, explore, and grow in order to succeed in an ever-changing global community.
(Episcopal)
(5)
6300 SW Nicol Road
Portland, OR 97223
(503) 768-3115
Gr: PK-12 | 866 students Avg. class size: 16 students Sports: 10 | Extracurrculars: 24 Tuition & acceptance rate listed
Northwest Academy
Northwest Academy Photo
(3)
1130 SW Main Street
Portland, OR 97205
(503) 223-3367
Gr: 6-12 | 234 students Avg. class size: 12 students Sports: 2 | Extracurrculars: 19 Tuition & acceptance rate listed

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