Oregon School Activities Association

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Oregon School Activities Association
OSAA Logo 2010.png
Map of USA highlighting Oregon.png
Abbreviation OSAA
Formation 1918
Type Volunteer; NPO
Legal status Association
Purpose Athletic/Educational
Headquarters 25200 SW Parkway Ave. Suite 1
Wilsonville, OR 97070
Coordinates 45°20′16″N 122°45′57″W / 45.337803°N 122.7658868°W / 45.337803; -122.7658868Coordinates: 45°20′16″N 122°45′57″W / 45.337803°N 122.7658868°W / 45.337803; -122.7658868
Region served
Official language
Executive Director
Tom Welter
Affiliations National Federation of State High School Associations
Website osaa.org

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.


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 current 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]

Classifications and leagues[edit]

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.[2][3][4]

A 1A school has fewer than 116 students, 2A between 116 and 235 students, 3A between 236 and 400 students, 4A between 401 and 850 students, 5A between 851 and 1520 students, and the largest schools, 6A, have 1521 or more students. However, some schools choose to "play up" in a larger classification than they would normally be assigned.

6A classification[edit]


Metro League[edit]

Mount Hood Conference[edit]

Three Rivers League[edit]

Portland Interscholastic League[edit]

Greater Valley Conference[edit]

5A classification[edit]

Midwestern League[edit]

Northwest Oregon Conference[edit]

Mid-Willamette Conference[edit]

Intermountain Conference[edit]

Columbia River Conference[edit]

4A classification[edit]

Cowapa League[edit]

Tri-Valley Conference[edit]

Far West League[edit]

Oregon West Conference[edit]

Sky-Em League[edit]

Skyline Conference[edit]

Greater Oregon League[edit]

3A classification[edit]

Lewis & Clark League[edit]

West Valley League[edit]

PacWest Conference[edit]

Mountain Valley Conference[edit]

Eastern Oregon League[edit]

Southern Cascade League[edit]

2A classification[edit]

Northwest League[edit]

Mountain View Conference[edit]

Tri-River Conference[edit]

Sunset Conference[edit]

Columbia Basin Conference[edit]

Wapiti League[edit]

1A classification[edit]

The Valley 10 League[edit]

Casco League[edit]

Mountain West League[edit]

Skyline League[edit]

Mountain Valley League[edit]

Big Sky League[edit]

Old Oregon League[edit]

High Desert League[edit]

Not assigned to a league[edit]

Previously listed[edit]

These schools were previously listed, but are not currently on the OSAA web site.[5]

Former members[edit]

Historic conferences made defunct by 2006 reclassification[edit]

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.[6][7]

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.[8][9] 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.[10][11]

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.[12][13]

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.[14][15] There's a New Wapiti League..

OSAA-sanctioned activities[edit]

The OSAA oversees the following activities:

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

See also[edit]


External links[edit]