Delphian School Photo - All students are involved in relevant, hands-on, learning experiences that allow students to relate their studies to real life.

Best Oregon Boarding Schools (2026-27)

For the 2026-27 school year, there are 4 college-prep and junior boarding schools serving 1,667 students located throughout Oregon.

Historical Statistics Overview

This State (OR)
US
# Schools
4 Schools
271 Schools
# Students
1,667 Students
107,111 Students

Academics and Faculty

This State (OR)
US
Average Student-Teacher Ratio
11:1
8:1
% Faculty with Advanced Degree
64%
69%

Academic Programs

This State (OR)
US
Avg. AP Courses
14
22
Avg. IB Courses
n/a
28
Avg. Class Size
14
13

Academic Performance

This State (OR)
US
Avg. SAT Score
1303
1270
Avg. ACT Score
30
27
Avg. Acceptance Rate
77%
59%

Tuition and Finances

This State (OR)
US
Avg. Tuition (Boarding)
$66,488
$64,480
Avg. Tuition (Day)
$30,448
$38,054
Avg. Tuition (International)
$75,048
$62,481
Avg. Financial Aid Rate
36%
42%
Avg. Financial Aid Grant
$9,500
$26,973
Avg. Endowment
$38 MM
$83 MM

Student Diversity

This State (OR)
US
% Students of Color
28%
30%
% International Students
17%
27%
% Boarding Students
51%
59%

Top Oregon Boarding Schools (2026-27)

School
Location
Quick Facts
Delphian School
Delphian School Photo - Delphian is located just one hour from Portland, OR. on a large 720 acre wooded campus. The residential community is in constant motion, alive with students from all around the world.
(28)
20950 SW Rock Creek Road
Sheridan, OR 97378
(503) 843-3521
Gr: 5-12 | PK-12 (day) | 220 students Student-teacher ratio: 12:1 Avg. class size: 13 students Acceptance rate: 53% Tuition listed
Oregon Episcopal School
Oregon Episcopal School Photo - Since 1869, our mission has been to inspire intellectual, physical, social, emotional, artistic, and spiritual growth so that students realize their power for good as citizens of local and world communities.
(Episcopal)
6300 SW Nicol Road
Portland, OR 97223
(503) 768-3115
Gr: 9-12, PG | PK-12, PG (day) | 875 students Student-teacher ratio: 7:1 Avg. class size: 14 students Tuition listed
St. Mary's School
St. Mary's School Photo
(Catholic)
816 Black Oak Drive
Medford, OR 97504
(541) 773-7877
Gr: 6-12 | 5-12 (day) | 504 students Student-teacher ratio: 10:1 Avg. class size: 15 students Tuition listed
Wy'East Mountain Academy
Wy'East Mountain Academy Photo
(4)
59550 East Highway 26
Sandy, OR 97055
(503) 622-8931
Gr: 7-12, PG | 68 students Student-teacher ratio: 15:1 Avg. class size: 15 students Acceptance rate: 100% Tuition listed

Frequently Asked Questions

How many boarding schools are located in Oregon?
There are 4 college-preparatory boarding schools located in Oregon.
What is the average tuition cost of boarding school in Oregon?
The average Oregon boarding school tuition cost is $67,863 per year.
What is the oldest boarding school in Oregon?
St. Mary's School, founded in 1865, is the oldest boarding school in Oregon.
What boarding school in Oregon has the lowest acceptance rates?
Delphian School has the lowest boarding school acceptance rate (53%) in Oregon.
What boarding school in Oregon has the highest average SAT scores?
St. Mary's School has the highest average SAT scores (1320) in Oregon.
Which boarding schools in Oregon are often viewed compared to one another?
Popular comparisons of boarding schools in Oregon include: Wy'East Mountain Academy vs. Delphian School

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