1964-65: Marquoketa Valley, Starmont (which is a consolidation of Strawberry Point and Arlington with Lamont), M-F-L, and South Winneshiek leave to play football in their all-sports conference, the Upper Miss Conference. Coggon joins the Pinicon Football Conference. Xavier? Conference disbands.

1963-64: no change

1962-63: Calmar becomes South Winneshiek. Monona becomes M-F-L. Membership remains at 7.

1961-62: Marquoketa Valley joins. Membership increases to 7.

1960-61: Xavier, Dyersville joins. Tripoli leaves. Membership remains at 6.

1958-59: Tripoli joins. Membership increaes to 6.

1957-58: Guttenberg leaves. Membership decreases to 5.

1955-56: Monona, Calmar, Coggon, Arlington, Guttenberg and Strawberry Point form the Quad-County Conference. Membership is 6.