I'm only familiar with
http://www.newktennis.com
You pretty much live on site and goto the local High School. You get out early and train your butt off.
The whole Academy recently went to the Texas Cup together. Some kids went to Easter Bowl together. In fact, one of the girls, Johansen (if i'm spelling the name correctly), won the Easter Bowl. There are always pros that travel to the tournaments with the kids. The pros take care of the tournament arrangements. Everyone I've known that has trained there and gone to college tennis went on with a scholarship of some sort (full or partial). Some go on the tour.
Anyhow, If you have any particular questions, ask here or e-mail me: matchpoints@yahoo. I'll answer them as bluntly as I can without any advertising junk :mrgreen: