"College football is rich with history, and the AP poll is a unique measure of how the sport has changed through time. The all-time list lets fans interact with that history, and debate how the nation's top programs fared over time." - Deputy Sports Editor, Noreen GillespieAccording to the AP, the rankings were based on total poll appearances, number of times ranked No. 1 and AP national championships. The AP poll started on Oct. 19, 1936, with 20 teams before getting reduced to 10 teams (1961-67) and then expanding back to 20 in 1968. The AP Top 25, as we know it today, started with the 1989 football season. You can see the complete list of the 100 programs ranked here.
AP Top 20 All-time Great Collegiate Football Programs: