Need Chico to do a demographic/population analysis. Of course any premier state champion U-17 club team should easily be able to beat any high school team, given that the high school team is restricted by boundaries from where they can draw their kids. Given that the club team can attract kids state-wide (and there are kids in the Charleston area who play club ball in the Greenville area) gives them an obvious, insurmountable advantage.
Only exception would be if Columbia or Greenville had a 4A-sized Catholic school that had a great coach that everybody wanted to play for (this scenario could exist up north).
