Check each school's athletic website. There will always be at least contact data for the coaches, and there should also be a link to do a player recruit profile to submit. Then you'll get every needed update on events and timelines.
On the tack of lacrosse quality, I'd urge readers to just look at these clips. About 3/4ths of the players in these 2014 Minto Cup games were rising HS juniors, rising seniors or kids gearing to go to college, and about 1/4th were kids who'd finished one year of college. Watching this should give you a good measure of where local club lacrosse is and where local prep lacrosse is versus these Junior A league players. There is a distinct trend now with NCAA coaches to head north drooling to recruit these players. Just have a look at the level of skill and team ball movement here as a compare to some Crabs vs. Madlax game or even a Landon vs. Gonzaga game.
https://www.youtube.com/watch?v=71Z8u-jhLZU
https://www.youtube.com/watch?v=QFkotLGq6RU
Now, this is not a suggestion to move to Ontario or Buffalo NY this summer, but if you are impressed with those two four minute lacrosse summaries, I'd urge you to look into whatever is available this winter and spring for box. Garrett Ince runs a league in NOVA, and there is an Annapolis league. Crabs has also talked about doing one in Baltimore and Howard County. There aren't a lot of real box offerings in the US yet, but we are lucky to have a few in this region.
If your son has ambitions to play college lacrosse, or even if your son is a commit and would like to actually play when he gets to that college, these videos show the level he'd need to be meeting or exceeding in order to do that. Just watch it once and consider the level of play versus what you are paying a lot of money for right now.