I saw this discussed in the rivalry thread, but I thought some might not see it in there.
1949: League formed with 5 teams: Copley, Green, Hudson, Manchester, and Northfield
1956-57: Highland joined for football only (for just two seasons)
1958: 4 more teams join: Woodridge, Mogadore, Revere, and Twinsburg
1964: Twinsburg leaves
1968: Mogadore leaves
1969: Coventry joins
1972: Norton joins
1976: Manchester leaves, Highland joins
1978: Woodridge leaves, Field joins
1983: Coventry leaves
1984: Wadsworth joins
1990: Field leaves, Tallmadge joins
1997: Hudson leaves, Cloverleaf joins
Copley and Green are the only two original members that have stayed in the league the entire time.
1949: League formed with 5 teams: Copley, Green, Hudson, Manchester, and Northfield
1956-57: Highland joined for football only (for just two seasons)
1958: 4 more teams join: Woodridge, Mogadore, Revere, and Twinsburg
1964: Twinsburg leaves
1968: Mogadore leaves
1969: Coventry joins
1972: Norton joins
1976: Manchester leaves, Highland joins
1978: Woodridge leaves, Field joins
1983: Coventry leaves
1984: Wadsworth joins
1990: Field leaves, Tallmadge joins
1997: Hudson leaves, Cloverleaf joins
Copley and Green are the only two original members that have stayed in the league the entire time.