Columns: School | Nickname | Location | Colors | Type | Membership Tenure | Notes
Black River | Pirates | Sullivan | Black, Gold | Public | 1964-1993 | Left for the MAC , currently in the PAC | Edison | Chargers | Milan | Blue, Orange | Public | 1968-1986 | Left for the SBC | Berlin Heights | Tigers | Berlin Heights | Orange, Black | Public | 1960-1968 | Consolidated into Edison HS in 1968 | Milan | Indians | Milan | Red, ? | Public | 1960-1968 | Consolidated into Edison HS in 1968 | Hillsdale | Falcons | Jeromesville | Columbia Blue, Gold | Public | 1963-1970 | Left for the WCAL | Hayesville | Panthers | Hayesville | Orange, Black | Public | spring 1963 | Consolidated into Hillsdale HS in 1963 | Jeromesville | Blue Jays | Jeromesville | Blue, White | Public | spring 1963 | Consolidated into Hillsdale HS in 1963