As Arkansas high school football teams wrap up district play, the best teams proceed to the Class 7A state tournament. The 12-team field features some of the teams in the rankings based on the state’s On3 Massey Ratings. The competition format includes the top four teams, each with a first-round bye. These squads will wait for their opponent from the eight remaining squads. The knockout format will end during the championship round on Dec. 8. The On3 Massey Ratings, officially used during the BCS era, is a model that ranks sports teams by analyzing game outcomes, strength of schedule, and marg…