As a coach, I would have to say that a blanket rule like that will not work. It sounds like a policy made up by someone who doesn't know anything about soccer, in particular about how inconsistent reffing is. I've seen kids get red carded on Wednesday for stuff that was OK on Monday. Connect it to other sports. Can you imagine tossing a player off a basketbball team if he was double teched? If he was a college prospect? I don't know what high school we're talking about, but that's a bad idea.