Had something like this happen last year but it was definitely not common. The girl had been playing up 2 years with her sister for the past few years on in rec. multi sport athlete. No one knew she existed because she was just an above average rec player at that age. When her dad moved her back to her class she was so used to playing with older girls that she was the best player out there. She played basketball and soccer too. Great stick. But likely the exception, not the rule.
