| Name |
County |
| Sheldon High School |
Lane |
| Sheridan High School |
Yamhill |
| Sherman Junior - Senior High School |
Sherman |
| Sherwood High School |
Washington |
| Sherwood High School |
Washington |
| Siletz Valley Early College Academy |
Lincoln |
| Silverton High School |
Marion |
| Sisters High School |
Deschutes |
| Siuslaw High School |
Lane |
| South Albany High School |
Linn |
| South Eugene High School |
Lane |
| South Medford High School |
Jackson |
| South Salem High School |
Marion |
| South Umpqua High School |
Douglas |
| South Wasco County High School |
Wasco |
| Southridge High School |
Washington |
| Spanish - English International School |
Multnomah |
| Sprague High School |
Marion |
| Springfield High School |
Lane |
| Springwater Trail High School |
Multnomah |
| Stanfield Secondary School |
Umatilla |
| Stayton High School |
Marion |
| Summit High School |
Deschutes |
| Sunset High School |
Washington |
| Sutherlin High School |
Douglas |
| Sweet Home High School |
Linn |
| Taft High School |
Lincoln |
| The Dalles - Wahtonka High School |
Wasco |
| Thurston High School |
Lane |
| Tigard High School |
Washington |
| Tillamook High School |
Tillamook |
| Toledo High School |
Lincoln |
| Trask River Tillamook Youth Authority Campus 2 |
Tillamook |
| Tualatin High School |
Washington |
| Umatilla High School |
Umatilla |
| Union High School |
Union |
| Vale High School |
Malheur |
| Valley Catholic High School |
Washington |
| Vernonia High School |
Columbia |
| Waldport High / Middle School |
Lincoln |
| Waldport High School |
Lincoln |
| Wallowa High School |
Wallowa |
| Warner School |
Douglas |
| Warrenton High School |
Clatsop |
| Wellness Business and Sports School |
Marion |
| Wellspring Friends School |
Lane |
| West Albany High School |
Linn |
| West Lane Technology Learning Center |
Lane |
| West Linn High School |
Clackamas |
| West Salem High School |
Marion |
| Weston - McEwen High School |
Umatilla |
| Westview High School |
Washington |
| Wheeler High School |
Wheeler |
| Willamette High School |
Lane |
| Willamina High School |
Yamhill |
| William P Lord High School |
Marion |
| Wilson High School |
Multnomah |
| Wilsonville High School |
Clackamas |
| Woodburn Academy of Art Science and Technology |
Marion |
| Woodburn Arts and Communications Academy |
Marion |
| Woodburn Success Alternative High School |
Marion |
| Yamhill Carlton High School |
Yamhill |
| Yoncalla High School |
Douglas |
