I know it's a hassle to get to a dermatologist (especially for rural schools), but most general physicians don't have the kind of experience with these type of skin conditions to make an adequate diagnosis or to tell when a wrestler is no longer contagious. It they could, then there would be no more problems with skin disease.

The only way to stamp this problem out for good is to have all skin diseases approved by a licensed dermatologist. It is worth a 2 hour drive to a larger community.