This is what Steve Stenersen of USL Lacrosse had to say on subject of grade based teams on another forum back in June. I wish they would devote an issue of their mag on this subject.

The problem with grade-based segmentation in youth sports is, of course, that it's not in the best interests of kids. The different rates of physical and cognitive development at each age varies widely so, in contact sport like boys' lacrosse, it's simply not safe to allow kids of such varying ages and development levels to compete against each other. Nor does it reinforce the fundamental principles of fair play and fun that are essential to player retention in youth sports. Allowing the club "system" and associated recruiting events to determine what's best for your child is not only a clear conflict of interest...it's a tremendous abdication of responsibility by the primary consumers of a child's lacrosse experience - parents. As most people should know by now, sport-specialization at an early age, year-round play, and the belief that playing more games is essential to player development are all myths. Sport specialization and year-round play burn kids out, drive them out of sport at too early an age, and lead to what has become an epidemic of overuse injuries in developing bodies. And, contrary to popular belief, playing more games doesn't make a player better; too often it simply reinforces bad habits because the quality of coaching offered by club teams is so inconsistent. It's incredibly ironic that peer pressure among parents plays such a significant role in the decisions they make on behalf of their kids...as does fear of retribution against their children from club programs and their coaches. That fear, alone, should trigger a serious concern. Sadly, parental ego also plays a role at times. But none of those are justifiable excuses for parents to allow and enable the youth lacrosse "industry" to make decisions based on its own interests...not those of the children they are paid to best serve. The single biggest factor in determining a child's success on the athletic field is genetics, not how much you play or pay. The overwhelming majority of kids who play club lacrosse and attend recruiting events won't get a college scholarship or admissions preference to play lacrosse in college. Most won't even play at the high school level. Club programs and tournaments are not inherently bad, but they need to be held accountable to what's best for your child. In a free market economy, it's up to the consumer - us parents - to make that happen. Or not.