That would get you an extra $2,500 over the teacher salary schedule and one extra conference period in a nearby district with five 5A (biggest) high schools.
Only the head football coaches are overpaid. Usually by granting them the title of "Athletic Director". I think the Athletic Director is responsible for scheduling all teams, but what else that job entails is beyond me.
I was personally aware of a Coach who made almost double what the average teacher was making - of course he had won a State Championship and had several years of at least making the playoffs -