We're new to the current gym, so I don't know many ages but my DD, who would be ancient at your gym, has been in the youngest age group in pretty much every meet she's ever been in. She did bump up to child B at level 7 states, but was back in child A for level 8 states the following year. She was an (old) level 4 (similar to new 3) at 7 years old and then moved up a level a year competing level 8 at 11-yo last year.