Best Private High Schools Belonging to National Association of Independent Schools (NAIS) in Oregon (2026)

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Best Oregon Private High Schools Belonging to National Association of Independent Schools (NAIS) (2026)

For the 2026 school year, there are 6 private high schools belonging to National Association of Independent Schools (NAIS) serving 2,795 students in Oregon. You can also find more schools membership associations in Oregon.

The private high schools belonging to National Association of Independent Schools (NAIS) in Oregon include Cascades Academy, The Delphian School, and Catlin Gabel School.

The average acceptance rate is 46%, which is lower than the Oregon private high school average acceptance rate of 81%.

33% of private high schools belonging to National Association of Independent Schools (NAIS) in Oregon are religiously affiliated (most commonly Episcopal and Catholic).

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.

St. Mary's Of Medford Photo - St. Mary's Weight Room

Catlin Gabel School Photo - Catlin Gabel is recognized as one of the finest schools in the nation. When students step onto our 67-acre campus, they find themselves in the center of our educational experience: fir trees, meadows, and apple orchard, as well as multimedia classrooms, a creative arts center, state-of-the-art science labs, divisional libraries, soccer fields, tennis courts, an outdoor track, and much more.

Oregon Episcopal School Photo - OES offers an inquiry-based education that prepares students for higher education and lifelong learning.

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

School

Location

Quick Facts

Catlin Gabel School

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8825 SW Barnes Road
Portland, OR 97225
(503) 297-1894

Gr: PK-12 | 784 students Avg. class size: 17 students Sports: 9 | Extracurrculars: 43 Tuition & acceptance rate listed

The Delphian School

Alternative School

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(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

(Episcopal)

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(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

Cascades Academy

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19860 Tumalo Reservoir Road
Bend, OR 97703
(541) 382-0699

Gr: PK-12 | 256 students Avg. class size: 18 students Sports: 8 | Extracurrculars: 11 Tuition & acceptance rate listed

St. Mary's Of Medford

(Catholic)

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(1)

816 Black Oak Drive
Medford, OR 97504
(541) 773-7877

Gr: 5-12 | 529 students Avg. class size: 18 students Sports: 13 | Extracurrculars: 16 Tuition listed

Mt. Scott Park Center For Learning

Alternative School

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6148 Se Holgate Blvd
Portland, OR 97206
(503) 771-8880

Gr: 9-12 | 131 students

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