- B
- Bainville (Bainville High School)
- Baker (Baker High School)
- Belgrade (Belgrade High School)
- Belt (Belt School)
- Billings (Billings Central High School)
- Butte (Butte Central Catholic High School)
- C
- Cascade (Cascade High School)
- Chinook (Chinook High School)
- Choteau (Choteau High School)
- Circle (Circle High School)
- Conrad (Conrad High School)
- Corvallis (Corvallis High School)
- Cut Bank (Cut Bank High School)
- F
- Fairfield (Fairfield High School)
- Florence (Florence Carlton High School)
- Frazer (Lustre Christian High School)
- H
- Hardin (Hardin High School)
- Harlem (Harlem High School)
- Hays (Hays Lodgepole High School)
- Heart Butte (Heart Butte High School)
- Helena (Helena Capital High School)
- Hinsdale (Hinsdale High School)
- R
- Richey (Richey High School)
- Rosebud (Rosebud High School)
- Roundup (Roundup High School)
- Ryegate (Ryegate High School)
- S
- Saint Regis (St. Regionalis High School)
- Seeley Lake (Seeley Swan High School)
- Shelby (Shelby High School)
- Sidney (Sidney High School)
- Stevensville (Stevensville High School)
- Sunburst (Sunburst High School)