The ratings come from Lattice, our model. Each week it re-solves the whole season from every score at once, so a win is worth more if the team you beat keeps winning.
Ten rating points are one point of spread on a neutral field: a team rated 30 higher is a 3-point favourite. Playing at home adds 3.3.
Each team starts from last season's rating, pulled toward its conference's average and adjusted for how much production it returns.
Ratings include our adjustment for how each team has run against the betting market, so the gap between two teams is the spread we predict.