Delphian School

20950 SW Rock Creek Road
Sheridan, OR 97378
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 #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 - 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 #4 - 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 #5 - 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 #6 - All students are involved in relevant, hands-on, learning experiences that allow students to relate their studies to real life.
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 - 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.
Delphian School Photo #9 - Delphian has a bustling fine and performing arts program where we consider artistic interests as essentials, not extras.
Delphian School Photo #10 - 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.
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.

Alumni Reviews
  Review School

  • Review Description

  • Class of 2021
    5 Stars  
    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. . .

  • Class of 2020
    5 Stars  
    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. . .

  • Class of 2018
    5 Stars  
    Emory University
    Located on the foothills of the coastal range, the Delphian School provides a friendly and peaceful place for students from all over the world.I will miss how students interact with each other. Every individual. . .
  • Show more reviews (16 reviews)
Definition of Terms
 | 2021 School Data
Delphian SchoolBoarding School Avg.
School FocusCollege PrepCollege Preparatory
Grades Offered (Boarding)5-125-12
Grades Offered (Day)Pre-K-12Pre-K-12
School TypeCo-edCo-ed
Religious AffiliationNon-denominationalNon-denominational
Year Founded19761907
Campus Size720 acres125 acres

Student Body

Enrollment230 students300 students
% Students of Color
% International Students
% Students Boarding
Average SAT Score1284* National Avg. »View
Average ACT score30*National Avg. » View
Offers Post-Grad YearNoNo

Academics and Faculty

Saturday ClassesNoNo
Classroom Dress CodeCasualCasual
Average Class Size20 students12
*National School Avg. » 18
Student : Teacher Ratio10:17:1
ESL Courses OfferedYesYes
% Faculty with Advanced Degree
Summer Program OfferedYesYes
Summer Program DetailsLink to Summer Program Details

Tuition Cost

Endowment Size$2 million$25 million
Yearly Tuition
(Boarding Students)
(Boarding tuition rates range: $54,364 - $57,416 )
Yearly Tuition
(Day Students)
Tuition international students$64,568$54,500
Yearly Tuition
(5 Day Boarding)
Summer Program Cost$2,800
(We have a 3 week and 6 week program and ranges between $2,800 - $8,150. 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
Avg. Financial Aid Grant$13,500
(Merit scholarships also available)
Merit Scholarships OfferedYesNo

Acceptance Rate

Application DeadlineNone / RollingJan. 15
Accepts Standardized ApplicationYesNo
SSAT RequiredNoYes
Acceptance Rate
Director of AdmissionsRachel Karl

Course Listings

List of Courses OfferedLink to List of Courses


# Interscholastic Sports Offered1016
SportsBasketball, Cheering, Cross Country, Cross Country Running, Soccer, Softball, Tennis, Track, Track and Field, Volleyball


Total Extracurricular Organizations2323
ExtracurricularsClub or Organization:
Audio Visual Club, Blue Key Tour Guides, Boy Scouts, Ceramics Club, Chess Club, Coffee Houses, Conversation Partners, Cooking Club, Diversity Discussion Group, International Club, Space Club, Student Council, Study Tutor Club, Woodshop, Writing and Poetry

Arts and Music Programs:
Choir, Drama Club, Drawing, Fine Arts Club, Guitar Club, Strings (Orchestra)

Recreational Athletic Programs:
Weightlifting, Yoga

College Matriculation

Year: 2010 - 201510 Most Popular College Choices  (# Enrolled)
Parsons, New School for Design4
Berklee College of Music3
University of Oregon3
University of Washington3
New York University2
University of California, Davis2
University of California, Los Angeles2
Cornell University1
Emerson College1
University of Notre Dame1
Link to 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.
    • Delphian School accreditations: Northwest Accreditation Commission (NWAC), Northwest Association of Independent Schools (NWAIS), The Association of Boarding Schools (TABS), Western Boarding Schools Association (WBSA), AdvancedEd
    • 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)
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