True top high school teams ( G.C., 'set, W.M., F-dale Wantaugh) do not need to, nor do they bring up 8th graders (except the very rare occasion, then they are not "impact players).Only border line teams that need to fill gaps, and weak teams have 8th graders play up and become impact layers. Even then they are impacting only there team and not high school lacrosse in general. A stand out 8th grade impact player at W.F. or P.M. isn't even considered at a top high school mentioned above, and against those teams are exposed for the youth they are. As far as saying a 8th or 9th or 10th grade Y.J. team could compete with any of the above mentioned team is the cool-ade drunken ramblings of a fanatical mind.
