there are 2 tests for a MS player playing up, a physical test for JV play and another for Varsity. The difference being time on run and possibly pullups, not 100% sure. The test for Varsity is only taken if the times/results when the JV test results didn't qualify the athlete for Varsity play. There shouldn't be any expemption. I think bringing an athlete up is at the discretion of the coaches. In lacrosse I think the Speed of the game is the biggest adjustment as well as playing vs. 16+yr old players as a 13/14 year old. you can have a big 8th grader move up, but they aren't nearly filled out as a 16+yr old. physicality and speed hardest part.