The Illinois High School Women’s Lacrosse Association assignors utilize ArbiterSports.com, an online scheduling system. You will receive an invitation from the IHSWLA assignors to join. You'll go online to set up your account and indicate when you are available to officiate games. Throughout the season you will be contacted via email and prompted to accept games that have been offered to you by the assignors through this system. A fee of less than $10 may apply for joining.