How good/bad/ok are they? Any players to watch out for?

No offense but they couldn't compete with the public school teams. You will hear all season about the private school players running up stats and home runs against meatball pitchers. They would easily be shutout against public teams.

Whoever wants to know the heart and mind of America had better learn baseball, the rules and realities of the game—and do it by watching first some high-school or small-town teams.
Jacques Barzun
NY Times 31 May 81