JV is VERY important for development of players at most schools. There's no question about that but the success of a JV team is what means nothing. Gilman as well has had great players come from the JV, like Kenny Goins, Devon Porchia, Micah Kiser, Miles Norris, Bijan Rhett, etc.
But Gilman has done a great job of getting the superstar youth league players that are Varsity ready as of late. And the ones that might not be ready to start are getting valuable experience going up against the upperclassmen everyday at practice. Players like 9th grader Korey Stephens. Who is probably already the best pure WR on the team. He hasn't gotten the hype that the other star kids on Gilman's team have but he is every bit the prospect the other kids are and is going to be a star.