Everyone from Bristol to Memfuss plays for fun. Otherwise, no one would be playing. What matters is organization and coaching from the youth leagues through the feeder programs to high school. Toss in demographics, population (not school size, but area population), and it's not hard to see how the bigger metro schools dominate 5 & 6A. Last year here in Florida, the FHSAA revamped their classification system to Metro and Suburban divisions. Instead of Class A through Class 8A, we now have 1M - 4M and 1S - 4S. There's also a 1R (Rural) class for remote rural schools like Pahokee. The Metro schools are comprised of the Palm Beach county to Dade county metro area, the Jacksonville metro area, the Orlando metro area, and the Tampa metro area. The reason they did it was because these schools were dominating the state championships for the most part. It didn't matter how good of a youth league program, feeder schools and coaching staff someone like a Vero Beach had, there was just a ton more talent available in the big metro areas, and while I can't speak for Tennessee, the schools here recruit like crazy and in the metro areas, teams can really load up.