Hoosier Athletic Conference Former Members Former Members

| School | City | Team_Name | County | Year_Joined | Year_Left |
|---|---|---|---|---|---|
| Attica | Attica | Red Ramblers | 23 Fountain | 1947 | 1966 |
| Delphi Community | Delphi | Oracles | 08 Carroll | 1947 | 1992 |
| Flora | Flora | Badgers | 08 Carroll | 1947 | 1961 |
| Rensselaer Central | Rensselaer | Bombers | 37 Jasper | 1947 | 1949 |
| Rossville | Rossville | Hornets | 12 Clinton | 1947 | 1977 |
| Winamac | Winamac | Warriors | 66 Pulaski | 1947 | 1972 |
| Sheridan | Sheridan | Blackhawks | 29 Hamilton | 1948 2000 | 1965 2012 |
| Southwestern | Lafayette | Wildcats | 79 Tippecanoe | 1958 | 1966 |
| Western | Russiaville | Panthers | 34 Howard | 1958 | 1965 |
| Carroll * | Flora | Cougars | 08 Carroll | 1961 | 1977 |
| Clinton Prairie * | Frankfort | Gophers | 12 Clinton | 1961 | 1974 |
| Central Catholic | Lafayette | Knights | 79 Tippecanoe | 1970 | 1993 |