It is all grad year based to make it easier for college coaches to evaluate kids for different incoming classes. That's why no one plays up. Now that the colleges have 3 less years of kids to worry about there is no excuse to use grade based through middle school. No college coach is even looking at 7th or 8th graders anymore. (Just look at the sidelines of these "recruiting" tournaments for 7th and 8th graders - no folding chairs at all)

Clubs and tourneys need to implement the age cutoffs until high school starts.