| SCHOOL | CITY | CHARTER |
| ABSAROKEE HS | ABSAROKEE | 01/25/1954 |
| ALBERTON HS | ALBERTON | 12/15/1936 |
| ANACONDA HS | ANACONDA | 12/30/1927 |
| ARLEE HS | ARLEE | 02/12/1963 |
| BAINVILLE HS | BAINVILLE | 10/15/1938 |
| BAKER HS | BAKER | 10/19/1937 |
| BEAVERHEAD CO HS | DILLON | 04/30/1930 |
| BELGRADE HS | BELGRADE | 04/17/1972 |
| BELT HS | BELT | 12/08/1936 |
| BIG FORK HS | BIG FORK | 03/20/1936 |
| BIG SANDY HS | BIG SANDY | 02/19/1964 |
| BIG SKY HS | MISSOULA | 01/19/1981 |
| BILLINGS HS | BILLINGS | 10/25/1926 |
| BILLINGS WEST HS | BILLINGS | 12/05/1961 |
| BOZEMAN HS | BOZEMAN | 11/15/1926 |
| BRIDGER HS | BRIDGER | 11/16/1933 |
| BROADWATER CO HS | TOWNSEND | 10/20/1949 |
| BROCKTON HS | BROCKTON | 03/15/1936 |
| BROWNING HS | BROWNING | 02/05/1946 |
| BUTTE HS | BUTTE | 04/29/1929 |
| CAPITAL HS | HELENA | 03/31/1976 |
| CARTER CO HS | EKALAKA | 03/12/1934 |
| CENTERVILLE HS | SAND COULEE | 01/27/1975 |
| CENTRAL CATHOLIC HS | BILLINGS | 01/01/1947 |
| CHARLO HS | CHARLO | 03/09/1960 |
| CHESTER HS | CHESTER | 09/08/1992 |
| CHINOOK HS | CHINOOK | 09/19/1977 |
| CM RUSSELL HS | GREAT FALLS | 10/17/1972 |
| COLSTRIP HS | COLSTRIP | 12/01/1939 |
| COLUMBIA FALLS HS | COLUMBIA FALLS | 10/17/1969 |
| COLUMBUS HS | COLUMBUS | 02/01/1944 |
| CONRAD HS | CONRAD | 04/30/1940 |
| CORVALLIS HS | CORVALLIS | 02/12/1940 |
| CULBERTSON HS | CULBERTSON | 10/15/1953 |
| CUSTER COUNTY DISTRICT HS | MILES CITY | 04/02/1928 |
| CUSTER HS | CUSTER | 10/25/1956 |
| CUT BANK HS | CUT BANK | 12/05/1938 |
| DARBY HS | DARBY | 11/13/1978 |
| DAWSON CO HS | GLENDIVE | 02/01/1935 |
| DENTON HS | DENTON | 12/01/1936 |
| DRUMMOND HS | DRUMMOND | 10/02/1933 |
| DUTTON BRADY HS | DUTTON | 11/02/1937 |
| FAIRFIELD HS | FAIRFIELD | 02/12/1941 |
| FAIRVIEW HS | FAIRVIEW | 10/22/1946 |
| FERGUS CO HS | LEWISTOWN | 02/20/1945 |
| FLATHEAD CO HS | KALISPELL | 03/05/1930 |
| FLORENCE-CARLTON HS | FLORENCE | 02/17/1976 |
| FORSYTH HS | FORSYTH | 01/12/1939 |
| FORT BENTON HS | FORT BENTON | 05/20/1930 |
| FROID HS | FROID | 01/13/1938 |
| GARFIELD CO HS | JORDAN | 11/18/1952 |
| GERALDINE HS | GERALDINE | 01/17/1966 |
| GLASGOW HS | GLASGOW | 02/19/1938 |
| GRANITE HS | PHILIPSBURG | 04/01/1934 |
| GREAT FALLS HS | GREAT FALLS | 04/01/1926 |
| HAMILTON HS | HAMILTON | 11/05/1934 |
| HARDIN HS | HARDIN | 11/26/1938 |
| HARRISON HS | HARRISON | 01/16/1952 |
| HAVRE HS | HAVRE | 01/16/1927 |
| HAYS-LODGE POLE HS | HAYS | 09/15/1971 |
| HELENA HS | HELENA | 10/12/1936 |
| HELLGATE HS | MISSOULA | 03/11/1965 |
| HUNTLEY PROJECT HS | WORDEN | 06/02/1943 |
| JEFFERSON HS | BOULDER | 09/12/1977 |
| JOLIET HS | JOLIET | 05/01/1935 |
| JUDITH GAP HS | JUDITH GAP | 12/10/1935 |
| LAMBERT HS | LAMBERT | 04/04/1950 |
| LAUREL HS | LAUREL | 10/22/1931 |
| LIBBY HS | LIBBY | 06/01/1938 |
| LINCOLN CO HS | EUREKA | 11/25/1940 |
| LOYOLA-SACRED HEART ACADEMY | MISSOULA | 10/02/1933 |
| LUSTRE CHRISTIAN HS | FRAZER | 02/05/1953 |
| MADISON VALLEY HS | ENNIS | 04/15/1986 |
| MANHATTAN CHRISTIAN HS | MANHATTAN | 09/21/1993 |
| MEDICINE LAKE HS | MEDICINE LAKE | 05/10/1936 |
| NOXON HIGH SCHOOL | NOXON | 11/15/1938 |
| OPHEIM HS | OPHEIM | 11/26/1935 |
| PARK CITY HS | PARK CITY | 12/15/1949 |
| PARK CO HS | LIVINGSTON | 05/05/1938 |
| PLENTYWOOD HS | PLENTYWOOD | 03/04/1937 |
| PLEVNA HS | PLEVNA | 02/28/1940 |
| POLSON HS | POLSON | 01/23/1937 |
| POPLAR HS | POPLAR | 06/20/1935 |
| POWDER RIVER CO HS | BROADUS | 01/01/1936 |
| POWELL CO HS | DEER LODGE | 10/06/1936 |
| POWER HS | POWER | 03/20/1937 |
| RAPELJE HS | RAPELJE | 11/24/1980 |
| RED LODGE HS | RED LODGE | 01/07/1932 |
| RICHEY HS | RICHEY | 03/06/1950 |
| ROBERTS HS | ROBERTS | 03/20/1956 |
| RONAN HS | RONAN | 02/03/1948 |
| ROUNDUP HS | ROUNDUP | 04/18/1947 |
| SCOBEY HS | SCOBEY | 10/15/1936 |
| SEELEY SWAN HS | SEELEY LAKE | 10/14/2005 |
| SENTINEL HS | MISSOULA | 11/17/1927 |
| SHELBY HS | SHELBY | 11/26/1938 |
| SHIELDS VALLEY HS | CLYDE PARK | 10/20/1997 |
| SIDNEY HS | SIDNEY | 12/05/1941 |
| SKYVIEW HS | BILLINGS | 02/16/1989 |
| ST IGNATIUS HS | ST IGNATIUS | 01/07/1991 |
| ST LABRE INDIAN CATHOLIC SCHOOL | ASHLAND | 09/08/1980 |
| STEVENSVILLE HS | STEVENSVILLE | 03/05/1936 |
| SUNBURST HS | SUNBURST | 11/17/1939 |
| SUPERIOR HS | SUPERIOR | 04/14/1936 |
| SWEET GRASS CO HS | BIG TIMBER | 12/01/1969 |
| TERRY HS | TERRY | 05/12/1944 |
| THOMPSON FALLS HS | THOMPSON FALLS | 02/26/1941 |
| THREE FORKS HS | THREE FORKS | 11/15/1956 |
| TROY HS | TROY | 11/01/1966 |
| TWIN BRIDGES HS | TWIN BRIDGES | 01/14/1985 |
| WHITE SULPHUR SPRINGS HS | WHITE SULPR SPR | 01/20/1934 |
| WHITEFISH HS | WHITEFISH | 03/12/1945 |
| WHITEHALL HS | WHITEHALL | 04/04/1934 |
| WIBAUX CO HS | WIBAUX | 02/03/1948 |
| WILLOW CREEK HS | WILLOW CREEK | 10/17/1979 |
| WILSALL HS | WILSALL | 03/01/1934 |
| WINNETT HS | WINNETT | 01/14/1966 |
| WOLF POINT HS | WOLF POINT | 02/01/1940 |
