Oregon School Activities Association

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The Oregon School Activities Association (OSAA) is a non-profit, board-governed organization that regulates high school athletics and competitive activities via athletic conferences in the U.S. state of Oregon, providing equitable competition among its members, both public and private. The OSAA is based in Wilsonville.

Oregon School Activities Association
Map of USA highlighting Oregon.png
TypeVolunteer; NPO
Legal statusAssociation
Headquarters25200 SW Parkway Ave. Suite 1
Wilsonville, OR 97070
Coordinates45°20′16″N 122°45′57″W / 45.3378°N 122.7659°W / 45.3378; -122.7659Coordinates: 45°20′16″N 122°45′57″W / 45.3378°N 122.7659°W / 45.3378; -122.7659
Region served
Official language
Executive Director
Peter Weber
AffiliationsNational Federation of State High School Associations


OSAA offices in Wilsonville

Originally created in 1918 as the "Oregon State High School Athletic Association", the name changed to the "Oregon School Activities Association", or OSAA, in 1947.

Currently, the OSAA sponsors seventy-four state championships in nineteen interscholastic activities including athletics, music, and forensics and is a member of the National Federation of State High School Associations.

Starting in the 2006–07 school year, the organization's four school classifications (1A, 2A, 3A, 4A) were divided into six classifications (6A, 5A, 4A, 3A, 2A, 1A). This caused some controversy as some school districts complained about the new classifications and sought legal action.[1] OSAA voted to keep a six classification system in 2017.[2]

Classifications and leaguesEdit

The OSAA divides schools up into classifications and leagues (or conferences).

There are six classifications, with the smallest schools in class 1A and the largest schools in class 6A. Within each classification, there are between five and eight leagues and conferences. Each league or conference has between four and 15 schools. Prior to 2006 there were four classifications (4A, 3A, 2A, 1A). Prior to 1990 there were four classifications (AAA, AA, A, B). And prior to 1970 there were also either three or four classifications (dependent on the sport), but they were designated as A, A-2, B, B-8 for football, A-1, A-2 and B in basketball and A, A-2, & B for baseball.[3][4][5]

According to OSAA's classification system for 2018–22, a 1A school has fewer than 89 students, 2A between 90 and 205 students, 3A between 206 and 349 students, 4A between 350 and 664 students, 5A between 665 and 1259 students, and the largest schools, 6A, have 1260 or more students.[6][7] However, some schools choose to "play up" in a larger classification than they would normally be assigned.

As of the 2018–19 season, OSAA's classifications comprise the following:[8]

6A classificationEdit

6A-1: Portland Interscholastic LeagueEdit

6A-2: Metro LeagueEdit

6A-3: Pacific ConferenceEdit

6A-4: Mt. Hood ConferenceEdit

6A-5: Three Rivers LeagueEdit

6A-6: Mountain Valley ConferenceEdit

6A-7: Southwest ConferenceEdit

5A classificationEdit

5A-1: Northwest Oregon ConferenceEdit

5A-2: Midwestern LeagueEdit

5A-3: Mid-Willamette ConferenceEdit

5A-4: Intermountain ConferenceEdit

4A classificationEdit

4A-1: Cowapa LeagueEdit

4A-2: Tri-Valley ConferenceEdit

4A-3: Oregon West ConferenceEdit

4A-4: Sky-Em LeagueEdit

4A-5: Skyline ConferenceEdit

4A-6: Greater Oregon LeagueEdit

3A classificationEdit

3A-1: Lewis & Clark LeagueEdit

3A-2: West Valley LeagueEdit

3A-3: Coastal Range LeagueEdit

3A-4: Mountain Valley ConferenceEdit

3A-5: Far West LeagueEdit

3A-6: Eastern Oregon LeagueEdit

2A classificationEdit

2A-1: Northwest LeagueEdit

2A-2: Tri-River ConferenceEdit

2A-3: Central Valley ConferenceEdit

2A-4: Sunset ConferenceEdit

2A-5: Southern Cascade LeagueEdit

2A-6: Blue Mountain ConferenceEdit

1A classificationEdit

1A-1: The Valley 10 LeagueEdit

1A-2: Casco LeagueEdit

1A-3: Mountain West LeagueEdit

1A-4: Skyline LeagueEdit

1A-5: Mountain Valley LeagueEdit

1A-6: Big Sky LeagueEdit

1A-7: Old Oregon LeagueEdit

1A-8: High Desert LeagueEdit

Former membersEdit

Historic conferences made defunct by 2006 reclassificationEdit

4A Southern Oregon Conference : The final year of the Southern Oregon Conference consisted of South Medford, North Medford, Klamath Union, Eagle Point, Ashland, Crater, Grants Pass and Roseburg. This league was for 4A schools located near the Oregon-California border.[9][10]

3A Tri-Valley Conference: The final year of the Tri-Valley Conference consisted of La Salle High School (Milwaukie, Oregon), Madras High School, Valley Catholic High School (Beaverton, Oregon), Estacada High School, Sherwood High School, and Wilsonville High School. This league was for 3A sized schools located in or near the Portland-Metro area.[9][10] The Tri-Valley conference is currently active once again as of the 2009 season. It is a 4A Conference for schools located in the Portland-Metro Area.

2A Columbia Basin Conference: The final year of the Columbia Basin Conference consisted of Culver High School, Heppner Junior/Senior High School, Pilot Rock High School, Sherman High School, Stanfield High School, Umatilla High School, and Weston-McEwen High School. This league was for 2A sized schools located in central-eastern Oregon.[9][10]

2A Trico League: The final year of the Trico League consisted of East Linn Christian Academy (Lebanon, Oregon), Harrisburg High School, Jefferson High School, Waldport High School, Monroe High School, Central Linn High School, and Oakridge High School. This league was for 2A sized schools located in the central Willamette Valley.[9][10]

2A Wapiti League: The final year of the Wapiti League consisted of Grant Union High School, Vale High School, Nyssa High School, Elgin High School, Enterprise High School, and Union High School. This League was for 2A sized schools located in far-eastern Oregon.[9][10]

OSAA-sanctioned activitiesEdit

The OSAA oversees the following activities:

Two-gender sports Boys only sports Girls only sports Other activities

See alsoEdit


  1. ^ "OSAA has to go to state board on six-class system". KATU. August 20, 2006. Retrieved 2019-01-20.
  2. ^ Tim Trower (October 16, 2017). "OSAA votes to keep six classifications". Mail Tribune. Medford, Ore. Retrieved 2019-02-03.
  3. ^ "OSAA Football Championships" (PDF). Oregon School Activities Association. Retrieved 2010-05-25.
  4. ^ "OSAA Basketball Championships" (PDF). Oregon School Activities Association. Retrieved 2010-05-25.
  5. ^ "OSAA Baseball Championships" (PDF). Oregon School Activities Association. Retrieved 2010-05-25.
  6. ^ "2018–2022 Classification and Districting Adopted Classifications and Districts" (PDF). Oregon School Activities Association. Archived (PDF) from the original on 2019-01-20.
  7. ^ "OSAA classification panel releases final recommendation for 2018–2022". OregonLive. September 28, 2017. Retrieved 2019-01-20.
  8. ^ "OSAA School Classifications and Districts". Oregon School Activities Association. Retrieved 2019-01-20.
  9. ^ a b c d e "2005–06 Regular Districts" (PDF). Oregon School Activities Association. Archived from the original (PDF) on 2011-09-20.
  10. ^ a b c d e "OSAA Regular Districts 2006–2010" (PDF). Oregon School Activities Association. Archived from the original (PDF) on 2012-04-05.

External linksEdit