Every so often a coach will tell a parent some version of, "honestly, I don't have much left to teach that a team environment wouldn't do better." It's not a brush-off. It's usually a genuine sign the kid has outgrown one-on-one lessons and would benefit more from group training and competition.
Comfortable, sustained freestyle and backstroke across a full pool length, reasonably efficient breathing, and the ability to follow multi-step verbal instruction without one-on-one hand-holding are the usual signs. A kid doesn't need to be fast, just technically solid enough that a team practice won't be spent re-teaching fundamentals.
Team practice is about repetition and conditioning far more than instruction. A kid who's used to individual correction every thirty seconds sometimes needs a season to adjust to getting feedback in a group instead. Some families keep a monthly private lesson going alongside team practice specifically to work on things that get less attention in a group setting.
Not sure if your swimmer is ready for a team? We can help you figure that out.
See Kids Program