[4] His ratings are recognized by the National Collegiate Athletic Association (NCAA) in its Football Bowl Subdivision record book.

[4] The NCAA describes Dunkel's methodology as a "power index system.

"[4] Dunkel described his system an index and claimed that "his difference by scores is scientifically produced.

[7][8][9] He also issued college basketball forecasts and rankings in conjunction with Converse, starting in the 1940s.

[10][11] Dunkel died at age 69 in December 1975 at Daytona Beach, Florida.