Triton left for the NSC in 1980, and was replaced by two MIC schools: Eastern (Greentown) and Oak Hill.

The lineup changed once more in 2006, when Oak Hill traded places with Central Indiana Athletic Conference member Wabash.

Rochester and Tippecanoe Valley share a traveling trophy that is called the bell.

On the next day of June 2, Northwestern announced they would take North Miami's place in the TRC, exiting the Hoosier Conference.

Baseball ~ Wabash: Current Member of Three Rivers Conference, won title as member of Central Indiana Conference Boy's Basketball ~ Lewis Cass & Northwestern: won titles as members of Mid Indiana Conference Football ^ Wabash were winners of the "mythical" state football championship that was recorded pre-1928 ~~ Oak Hill: Won title as Member of Three Rivers Conference, current member of Central Indiana Conference Volleyball Golf Tennis ^ Peru: won title as member of Central Indiana Conference Track and Field Wrestling Softball ^ Lewis Cass: won titles as member of Mid Indiana Conference [2]