to hate a school like that. It is important for HS coaches to have as many schools as possible be interested in their players. I know quite a few HS coaches and despite them being fans of one particular college or another personally all of the ones I know strive to maintain good relationships with all of the colleges around here and support all of them in recruiting their players.
It is really dumb for a HS coach to allow some personal fandom and feelings to close off a possible avenue for their players to get offered scholarships or college opportunities. Just dumb as can be.