The National Football League is the highest level of professional American football in the United States, and is considered the top professional American football league in the world. It was formed by eleven teams in 1920 as the American Professional Football Association, with the league changing its name to the National Football League in 1922. The league currently consists of thirty-two teams from the United States. The league is divided evenly into two conferences – the American Football Conference and National Football Conference , and each conference has four divisions that have four teams each, for a total of 16 teams in each conference. The NFL is an unincorporated 501 association, a federal nonprofit designation, comprising its 32 teams.
The American Football Coaches Association is an association of over 11,000 football coaches and staff on all levels. According to its constitution, some of the main goals of the American Football Coaches Association are to "maintain the highest possible standards in football and the profession of coaching football," and to "provide a forum for the discussion and study of all matters pertaining to football and coaching." The AFCA, along with USA Today, is responsible for the Division I-A Coaches Poll that determines the national champion each year. The American Football Coaches Association is also responsible for the Top 25 poll for Division II and Division III football.