Delphian School (2026 Profile)

5.00 (19 reviews)

Tel: (503) 843-3521

20950 SW Rock Creek Road
Sheridan, OR 97378

www.delphian.org

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Delphian School Photo #1 - 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.

Delphian School Photo #2 - Delphian is for the curious, compassionate and driven. For those who lead by example-the doers, the makers and the fixers. For those who live life to the fullest and love exploring and discovering.

Delphian School Photo #3 - All students are involved in relevant, hands-on, learning experiences that allow students to relate their studies to real life.

Delphian School Photo #4 - The Delphian curriculum starts with the classic subjects you need for a well-rounded education: literature, science, mathematics, history and the arts. Students will also study life skill related subjects such as communication, leadership, planning and organizing and many other vital life subjects.

Delphian School Photo #5 - Conventional schooling places an emphases on tests, rules and grades rather than purpose, interest and comprehension. Our mastery-based curriculum teaches students the most valuable skill of all: how to teach yourself anything you want to learn.

Delphian School Photo #6 - To wrap your head around an idea, you need to get your hands dirty. Practical experience is central to learning at Delphian.

Delphian School Photo #7 - Our graduates leave Delphian with real-life skills and abilities. Ready for change, for higher education and ready for the real world.

Delphian School Photo #8 - Delphian has a bustling fine and performing arts program where we consider artistic interests as essentials, not extras.

Delphian School Photo #9 - We think of these as complimentary co-curriculars - not extra-curricular - because music, art, athletics and all the rest are all part of a well-rounded education.

Delphian School Photo #10 - Discipline is a key component of any sports program, just as hard work is expected from every player. Delphian's athletic program emphasizes these qualities, as well as participation and sportsmanship.

We teach real-life skills and abilities. We focus on balancing the theoretical and practical side of learning.

Our graduates are ready for change, ready for higher education and ready for the real world.

Quick Facts (2026)

Grades: (Boarding Students) 5-12
Grades: (Day Students) PK-12
Enrollment: 220 students
Yearly Tuition (Boarding Students): $62,750
Yearly Tuition (Day Students): $27,652
Acceptance rate: 53%
Average class size: 13 students
Application Deadline: Feb. 15 / rolling
Source: Verified school update

Top Rankings

Delphian School ranks among the top 20 boarding schools (out of 307 schools) for:

School Overview

| 2025 School Data

Delphian School

Boarding School Avg.

School Focus

College Preparatory

Grades Offered (Boarding)

5-12

9-12

Grades Offered (Day)

PK-12

Pre-K-12

School Type

Co-ed

Year Founded

1976

1909

Campus Size

720 acres

125 acres

School Calendar

View School Calendar

School Motto

Start Here. Go Anywhere.

Student Body

Enrollment

220 students

300 students

% Students of Color

34%

25%

% International Students

30%

20%

% Students Boarding

88%

70%

Average SAT Score

1285
(Out of 1600)

* National Avg. »View

Average ACT score

30
(Out of 36)

*National Avg. »View

Offers Post-Grad Year

Academic Profile

Saturday Classes

Classroom Dress Code

Casual
Professional Dress day(Every Friday)

Casual

Average Class Size

13 students

* National Avg. »18

Student-Teacher Ratio

10:1

7:1

ESL Courses Offered

Yes

% Faculty with Advanced Degree

41%

70%

Summer Program Offered

Yes

Summer Program Details

View Summer Program Details

Accreditations

The Association of Boarding Schools (TABS)

Tuition & Financial Aid

Endowment Size

$33.6019 million

$25 million

Yearly Tuition
(Boarding Students)

$62,750
(Boarding tuition rates range: $62,750 - $71,136 and vary by school (Elementary, Middle, Upper). Delphian offers financial aid which may reduce the cost of tuition. We also offer 5-day boarding.)

$59,900

Yearly Tuition
(Day Students)

$27,652
(Day student tuition rates range from $27,652 - $50,113 and vary by school (Lower, Elementary, Middle, Upper). Delphian offers flexible tuition which may reduce the cost of tuition to qualified families.)

$33,500

Tuition international students

$78,596

$53,975

Yearly Tuition
(5 Day Boarding)

$58,511

$44,000

Summer Program Cost

$5,142
(We have a 4 week and 6 week program and ranges between $5,142 - $11,192. Price will vary depending on Day or Boarding students. International students have slightly different pricing as well to account for things such as insurance.)

% Students on Financial Aid

44%

40%

Avg. Financial Aid Grant

$13,500
(Merit scholarships also available)

$25,000

Merit Scholarships Offered

Yes

Admissions

Application Deadline

Feb. 15 / rolling

Jan. 15

Accepts Standardized Application (SAO and/or Gateway)

Yes

Acceptance Rate

53%

58%

Director of Admissions

Bridgette Rappoport

Application URL

Online Application

Sports

# Interscholastic Sports Offered

Sports

BasketballCheering

Cross CountryCross Country Running

SoccerSoftball

TennisTrack

Track and FieldVolleyball

Colors

White, Green

Extracurriculars

Total Extracurricular Organizations

Extracurriculars

Club or Organization:

Basketball teamBook club

Ceramics ClubChess Club

Conversation PartnersCooking Club

Debate ClubDiversity Discussion Group

Dungeons and Dragons clubMakerspace

Soccer teamSpace Club

Student CouncilTrack and field team

Volleyball teamWay to Happiness club

WoodshopWriters club

Writing and PoetryYouth for Human Rights club

Show More (4)Hide

Arts and Music Programs:

Advanced ArtChoir

Digital ArtDrama Club

DrawingFine Arts Club

Guitar ClubMusic instruction

Recreational Athletic Programs:

Basketball classConditioning Class

Volleyball classYoga

College Matriculation

College Acceptance Rate

85%

10 Most Popular College Choices (# Enrolled)

Parsons, New School for Design

Berklee College of Music

University of Oregon

University of Washington

New York University

University of California, Davis

University of California, Los Angeles

Cornell University

Emerson College

University of Notre Dame

View Matriculation Data

School Notes

Conventional schooling places an emphasis on tests, rules and grades rather than purpose, interest and comprehension. Delphian School was founded with a basic understanding that students are naturally interested in learning and can comprehend even the most complex subjects when they have a goal for what they are studying. The Delphi Program empowers this natural instinct with a program tailored to each student`s individual interest.
Our students, parents and alumni agree-you`ve never seen a school like Delphian. Our mastery-based curriculum teaches students the most valuable skill of all: how to teach yourself anything you want to learn.
In addition to the classic subjects, and unique to the Delphi Program, students study communication and leadership, the philosophy of ethics, planning and organizing skills and many other vital subjects. These skills ensure graduates are ready for life as adults.
Sample of notable school alumni/alumnae:
- Sky Dayton - Founder of EarthLink and founder and chairman of Boingo Wireless, and a technology investor/entrepreneur.
- Thad Corea - Drummer (Wild Colonials; Blue Man Group); Jaguar Recording Studio
- Arwen Dayton - Author
- Natasha Gray - Artist/sculptor
- Vivian Gray - Actress (Dread)
- Sylvan Lionni - Artist
- Melissa McPhail - Author
- David O'Donnell - Actor/producer/writer: Air Force One; NCIS; Days of Our Lives
- Eduardo Olmos - Mayor of Torreon, Coahuila, Mexico
- Doug Rappoport - Lead guitarist (Edgar Winter)

Source: Verified school update

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Frequently Asked Questions

How much does Delphian School cost?

Delphian School's tuition is approximately $62,750 for boarding students and $27,652 for day students.

What is the acceptance rate of Delphian School?

The acceptance rate of Delphian School is 53%, which is lower than the boarding school average of 58%.

Who are famous alumni from Delphian School?

Delphian School famous alumni include: Sky Dayton, Thad Corea, Arwen Dayton, Natasha Gray, Vivian Gray, Sylvan Lionni, Melissa McPhail, David O'Donnell, Eduardo Olmos and Doug Rappoport.

What sports does Delphian School offer?

Delphian School offers 10 interscholastic sports: Basketball, Cheering, Cross Country, Cross Country Running, Soccer, Softball, Tennis, Track, Track and Field and Volleyball.

Does Delphian School offer a summer program?

Yes, Delphian School offers a summer program. Visit their summer school page for more information.

What is Delphian School's ranking?

Delphian School ranks among the top 20 boarding schools for High ACT scores.

When is the application deadline for Delphian School?

The application deadline for Delphian School is Feb. 15 / rolling (applications are due on Feb. 15 but additional applications are reviewed year-round as space permits ).

Alumni Reviews Review School

Review

Description

Delphian School Alumni #1
Class of 2020
5.006/8/2021
Interior Design Studies

Delphi provides an education that is tailored to each student. I got to discover what I wanted to do, and then actually do courses and projects that fit with what I want to do after. . .

Delphian School Alumni #2
Class of 2021
5.004/1/2021
On Route to Chapman University

The small, intimate classes fully give a one-of-a-kind experience. Our teachers are readily available to help and do so happily. I have only had good experiences working with any faculty member at this school. On. . .

Delphian School Alumni #3
Class of 2018
5.008/4/2018
N/A

There are two main things that are extremely unique about Delphian. First, is the use of Study Technology. This teaches students how to study, and help them be able to move faster and actually understand. . .

Show more reviews (16 reviews)

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