The Houlgate System, also known as the Deke Houlgate collegiate football rating system, was a mathematical rating system for determining annual college football national championships. The ratings, which rated teams according to the strength of their opponents, were created by Carroll Everard "Deke" Houlgate, Sr., a sports publicist and statistician. Houlgate used his system to select national champions on a current basis from 1927 to 1958. He also applied his ratings methodology retroactively to select national champions for each year from 1885 to 1926. His selections were published in newspapers in the 1930s and 1940s.