Tolle's mathematically-derived rankings of football teams

Texas high school football:

• District 23-5A rankings, with predictions
• District 23-5A rankings, week- by-week
• Texas 5A state rankings, week-by-week

College and Professional football:

• NCAA Division I rankings, week-by-week
• NFL rankings, week-by-week

Ned Freeman's rankings:

• Various sports
• National high school football ratings