It's interesting that they are so involved with youth thru HS in EP. I can see why that would turn into a successful program from top to bottom. My experience with my kids in the NW burbs is the complete opposite. My older son plays hockey and baseball, and when he got to HS it became apparent that the coaches didn't care how you performed in youth (even higher levels like AAA baseball or Bantam A/AA hockey) when entering the HS programs. Especially in baseball. The HS coaches feel that the youth coaches are morons and basically have said, somewhat paraphrasing here, "forget what you learned in youth sports, how good you did, where you played. Those coaches didn't know shit". Meanwhile, my kids youth baseball coach was a minor league coach for a time, so he's pretty knowledgeable. One kid, who was a machine in the outfield started his HS career playing SS/2nd. Just dumb. A year later he's finally in the outfield again doing super well.
Anyway, I really like the idea of youth/HS being on the same page. I don't know as much as you all about EP, but obviously it's worked really well for them.