Two big computer rankings are 1) Massey Rankings and 2) Calpreps.(Calpreps is actually the Freeman computer model but accessible on the Calpreps site.)
Both of these computer rankings have both national and state rankings. They have game predictors. Calpreps has rankings by division/class and much, much more. They even have dynasty rankings which rank the best football programs over the last 5 years or last 20 years.