The conduct rule policy is to be given to all baseball/softball umpire coordinators and game umpires by the school prior to the start of the game (AISA Athletic Handbook, page 8, D, Note).
Diamond is the adopted ball for AISA varsity baseball and softball.
Baseball Association Ball
MANDATORY BALLS, ETC. FOR AISA SPORTS PLAY: DIAMOND BALL FOR BASEBALL AND SOFTBALL, AND ďTHE GAME" CAPS/VISORS FOR BASEBALL AND SOFTBALL. THIS ENDORSEMENT IS FOR ALL AISA COMPETITIONS. OFFICIAL COMPLAINTS FOR NOT FOLLOWING THIS POLICY MUST BE WRITTEN AND SIGNED BY THE INVOLVED OPPOSING COACH, SIGNED BY THE HEAD OF SCHOOL AND MAILED TO THE AISA OFFICE. THERE WILL BE A $500 FINE PER PLAYING DATE IF THE ENDORSED BALL, CAP OR VISOR IS NOT WORN IN COMPETITION.