We use age as predetermining factor for how we split up the groups and generally, it works out that we stick fairly close to the original group split…HOWEVER, the way we break up the groups by age is simply a guide, and if you have a more advanced 2nd year Squirt, for example, we have no problem with them skating in the Pee Wee and Up group…We leave it to you to help us determine what is best.