- Absarokee High School
- Alberton High School
- Anaconda High School
- Arlee High School
- Augusta High School
- Bainville High School
- Baker High School
- Beaverhead County High School
- Belfry High School
- Belt High School
- Big Sandy High School
- Big Sky High School
- Bigfork High School
- Billings Central Catholic High School
- Billings Senior High School
- Billings West High School
- Box Elder High School
- Bozeman High School
- Bridger High School
- Broadview High School
- Broadwater High School
- Brockton High School
- Browning High School
- Butte Central Catholic High School
- Butte High School
- Capital High School
- Carter County High School
- Cascade High School
- Centerville High School
- Charles M. Russell High School CMR
- Charlo High School
- Chester Joplin Inverness High School CJI
- Chinook High School
- Choteau High School
- Circle High School
- Colstrip High School
- Columbia Falls High School
- Columbus High School
- Conrad High School
- Corvallis High School
- Culbertson High School
- Custer County District High School
- Custer High School
- Cut Bank High School
- Darby High School
- Dawson High School
- Denton High School
- Dodson High School
- Drummond High School
- Dutton Brady High School
- Ennis High School
- Fairfield High School
- Fairview High School
- Fergus High School
- Flathead High School
- Florence Carlton High School
- Forsyth High School
- Fort Benton High School
- Frazer High School
- Frenchtown High School
- Froid High School
- Fromberg High School
- Gardiner High School
- Garfield County District High School
- Geraldine High School
- Geyser High School
- Glacier High School
- Glasgow High School
- Granite High School
- Grass Range High School
- Great Falls Central Catholic High School
- Great Falls High School
- Hamilton High School
- Hardin High School
- Harlem High School
- Harlowton High School
- Harrison High School
- Havre High School
- Hays Lodge Pole High School
- Heart Butte High School
- Helena High School
- Hellgate High School
- Heritage Christian School
- Highwood High School
- Hinsdale High School
- Hobson High School
- Hot Springs High School
- Huntley Project High School
- Hysham High School
- Jefferson High School
- Joliet High School
- Judith Gap High School
- Lambert High School
- Lame Deer High School
- Laurel High School
- Lavina High School
- Libby High School
- Lima High School
- Lincoln County High School
- Lincoln High School
- Lodge Grass High School
- Lone Peak High School
- Loyola Sacred Heart High School
- Lustre Christian High School
- Malta High School
- Manhattan Christian School
- Manhattan High School
- Medicine Lake High School
- Melstone High School
- Mission Mountain School
- Missoula International School
- Monarch School
- Montana School for Deaf & Blind High
- Moore High School
- Mount Ellis Academy
- Nashua High School
- North Star High School
- North Toole County High School
- Northern Cheyenne High School
- Noxon High School
- Opheim High School
- Park City High School
- Park High School
- Peerless High School
- Plains High School
- Plenty Coups High School
- Plentywood High School
- Plevna High School
- Polson High School
- Poplar High School
- Powder River County District High School
- Powell County High School
- Power High School
- Rapelje High School
- Red Lodge High School
- Reedpoint High School
- Richey High School
- Rimrock Christian High School
- Roberts High School
- Rocky Boy High School
- Ronan High School
- Rosebud High School
- Roundup High School
- Roy High School
- Ryegate High School
- Saco High School
- Savage High School
- Scobey High School
- Seeley Swan High School
- Sentinel High School
- Shelby High School
- Shepherd High School
- Sheridan High School
- Shields Valley High School
- Sidney High School
- Simms High School
- Skyview High School
- St. Ignatius High School
- St. Labre Indian Catholic High School
- St. Regis High School
- Stanford High School
- Stevensville High School
- Stillwater Christian School
- Superior High School
- Sussex School
- Sweet Grass County High School
- Terry High School
- Thompson Falls High School
- Three Forks High School
- Troy High School
- Turner High School
- Twin Bridges High School
- Two Eagle River School
- Valier High School
- Valley Christian School
- Victor High School
- West Yellowstone High School
- Westby High School
- White Sulphur Springs High School
- Whitefish High School
- Whitehall High School
- Whitewater High School
- Wibaux High School
- Willow Creek High School
- Winifred High School
- Winnett High School
- Wolf Point High School
- Yellowstone Academy
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