Do You Know the district system of play that was in place for the IHSA tournaments from 1936-1971?
In this time span, smaller schools began in districts, then the winner moved on to the regional, then on to sectional, etc. Larger schools began at the regional level. That is the reason so few districts schools ever advanced to the state finals in those years. The extra 3 games took its toll in terms of wearing down the players from the smaller schools.