no secret
They have put everything into baseball, from the head coach picking up New Lenox kids Sparks etc.. on his way into school. Many $ discounts for these kids. The Head Coach's brother coaches the Illinois Sparks and are the former St. Rita with a pipeline of Spark players to STL.
On their Baseball web site, it says "Recruiting form," like they are a college. Does New trier or Oak Park have this link on its baseball page?
On a side note - go out and watch them play, dress, and behave. An an example of how not act on the field. War paint on faces, and pathetic, constant yacking from the dugout - a disgrace.
