- C
- Camas
- Cashmere (Cashmere High School)
- Cathlamet (Wahkiakum High School)
- Centralia (Centralia High School)
- Cheney (Cheney High School)
- Chimacum (Chimacum High School)
- Clallam Bay (Clallam Bay High School)
- Clarkston (Clarkston High School)
- Cosmopolis
- E
- Eatonville (Eatonville High School)
- Elma
- Entiat (Entiat High School)
- Ephrata (Ephrata High School)
- Everson (Nooksack Valley High School)
- M
- Marysville
- Morton (Morton High School)
- Mossyrock (Mossyrock High School)
- Mount Vernon
- Mountlake Terrace
- R
- Randle (White Pass High School)
- Raymond (Raymond High School)
- Redmond
- Republic (Republic High School)
- Richland
- Royal City (Royal High School)