Olympia Gymnastics Academy - Offers recreational gymnastics classes for boys and girls as well as a competitive team program. Located in Shelby Township. GTC Classics Gymnastics - Information, classes and competitions,teams,staff and club activities. Located in Rochester Hills. Mills Gymnastics USA - Programs, schedule, team, facility, map. Located in Southgate. AGA Gymnastics Training Center - The gym, class schedule, class descriptions, team program. Located in Flint. Gedderts' Twistars USA - Competitive women's gymnastics from levels 5-10. Two locations: Dewitt and Diamondale. Stars and Stripes Gymnastics Academy - Training gymnasts from age 2 to 18. Located in Clarkston Aerials Gymnastics - Recreational and competitive artistic gymnastics and trampoline. Located in Grand Rapids.