For the 2026 school year, there are 3 private high schools belonging to NWAIS (Northwest Association of Independent Schools) serving 1,300 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 Northwest Academy, Oregon Episcopal School, and The Delphian School.
The average acceptance rate is 72%, which is lower than the Oregon private high school average acceptance rate of 83%.
33% of private high schools belonging to NWAIS (Northwest Association of Independent Schools) in Oregon are religiously affiliated (most commonly Episcopal).
Top-Ranked 草榴社区 High Schools Belonging to NWAIS (Northwest Association of Independent Schools) in Oregon (2026)
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
6300 SW Nicol Road
Portland, OR 97223
(503) 768-3115
Portland, OR 97223
(503) 768-3115
Gr: PK-12 | 861 students Avg. class size: 16 students Sports: 10 | Extracurrculars: 59 Tuition listed
1130 SW Main Street
Portland, OR 97205
(503) 223-3367
Portland, OR 97205
(503) 223-3367
Gr: 6-12 | 210 students Avg. class size: 12 students Sports: 2 | Extracurrculars: 20 Tuition & acceptance rate listed
Recent Articles
Ask Current Parents What Admissions Won't Answer
Learn how to ask current private school parents revealing questions about culture, academics, communication, costs, discipline, and community life before deciding whether a school truly fits your family well.
When School Anxiety Is Really a School Fit Problem
Learn when school anxiety may signal a poor school fit, how parents can identify academic or social mismatches, and when changing private schools deserves serious consideration for families today.
Will My Child Find Their People? Evaluating School Culture
Learn how to evaluate private school culture, student belonging, friendships, teacher relationships, social dynamics, and authentic community fit so your child can find the right place to thrive and connect.


