High School | Join Year | From | Left | league left to
--- | --- | --- | --- | ---
Ainsworth | 1954 |  | 1961 | Big Nine Conference[1]
Atherton | 1960 |  | 1976 | Mid-Eastern Eight Conference[2]
Beecher | 1950 |  | 1960 | Big Nine Conference [3]
Bendle | 1950 |  | 1975 | Mid-Eastern Eight Conference[4]
Bentley | 1960 |  | 1978 | Genesee Eight [5]
Brandon | 1977 |  | 1978 | Five County 5 League[6]
Clio | 1950 |  | 1960 | Big Nine Conference[7]
Davison | 1950 |  | 1960 | Big Nine Conference[8]
Durand | 1964 |  | 1978 | Flint Metro League[9]
Fenton | 1940[10] |  | 1968 | Flint Metro League[11]
Flushing | 1950 |  | 1960 | Big Nine Conference[12]
Grand Blanc | 1950 |  | 1960 | Big Nine Conference[13]
Hartland | 1976 |  | 1978 | Five County 5[14]
Kearsley | 1950 |  | 1960 | Big Nine Conference[15]
Lake Fenton | 1976 |  | 1978 | Genesee Eight[16]
LakeVille | 1956 2nd: 1964 |  | 1962 2nd: 1976 | Independent 2nd: Flint Metro League[17]
Linden | 1974 |  | 1978 | Genesee Eight[18]
Mt. Morris | 1950 |  | 1960 | Big Nine Conference[19]
Swartz Creek | 1960 | County C League[20] | 1968 | Flint Metro League[11]