He won't be able to play most summer tournaments because most leagues and tournaments have rules that a player that has played any high school lacrosse can not play youth any more. The Crabs bigger, faster and older have this "win" with loads of asterisks.
That rule is NEVER enforced, and most clubs simply blow it off. It's a pretty dumb rule, really. Why penalize a kid for being good enough to play on a HS freshman or JV team? This isn't rec league. We should have the best players at the age or grade level playing, period. Who cares if they have played for a high school?