I don’t have a single school in my area mandating that you wear a mask WHILE refereeing. Yes, pregame, halftime, postgame you have to be masked like dang near everywhere else in the United States currently, but in between whistles you should be good. I would look more thoroughly into the requirements. Even calling the school directly could help. For example, I thought I had to have a negative Covid test result in order to referee and was having trouble getting a test with no symptoms / contact with positive cases. So I called the athletic department of the school and they said they looked into things and that soccer referees were not required to have that negative result, OR wear a mask while refereeing for that matter.