Ohio River Valley Conference

Hanover and Osgood consolidated with other local schools to become Southwestern and Jac-Cen-Del in 1960, with both staying in the league.

Milan, a school that had dominated 1950s basketball and had football, moved to the Eastern Indiana Athletic Conference in 1962.

Dillsboro and Moores Hill would follow suit in 1978, combining with Aurora to form South Dearborn.

Left as a six-school conference, the ORVC welcomed founding member Milan back in 1985, as the former basketball power was struggling to keep up with larger rivals in the post-consolidation era.

Lawrenceburg was denied entry in the 1990s, and there is only one other school in the area (Oldenburg Academy) who is of a similar size.