They do this at DD's gym. Schedules and groups are changed around three times a year depending on whatever the coaches think, school schedules etc. There are a few girls who are obviously the "A" team, and then those who are the "b" team. DD is not "A" team, though she has done very well (IMO). Her gym just has a lot of really talented high scoring girls. She has never been a superstar, just fairly solid and "average" for her gym. Some of the parents do get upset with the groupings, but coaches don't change them. It can be hard to see the extra training and attention that some girls get versus others, but I think I have really found peace over the whole issue. DD WANTS to be on the "A" team, and is VERY aware of who they are and what they get attention wise. Because of that, she has pushed herself and has progressed a LOT. So I guess being the underdog is a good thing for her! IMO it is almost better to not be on that "A" team in some ways. They have a lot of pressure and expectations placed upon them that the other girls don't have. They are expected to get the huge scores, which I think can be hard to deal with at a young age. The most important thing is that "A" or "F" team doesn't matter- DD is happy, thriving, loves gym and is progressing. That is what counts and I am hanging my hat on that!