Don't think they still do it, but when I officiated in the '80s each coach and the AD would fill out a referee critique shhet after each dual/tourney and forward to state offices. Any negative rating would have to be answered by the officials. Poor officials were weeded out effectively.

As a coach I tried to instill in my wrestlers to wrestle 'two points better' in that they would lose two points a match either through a missed call or potential error because referees ARE human.