I found this posted on another site.
Ill. REGION PLAY & TIE-BREAKERS
All teams are required to play all other teams within their region. The teams with the best region records shall be declared the region winner, runner-up, third and fourth place and shall advance to the first round of the football play-off series.
If at any point when the following tie-breaking procedures are applied, one team has beaten all the other teams that are tied for a play-off position, that team shall be rated above the others.
In the event of a tie for the region winner, runner-up, third-place, or fourth-place team, if either teams) has defeated the other(s) in regular-season play, the teams) shall be rated above the other(s) in the standings. After the region winner has been determined, the tie-breaker procedure shall begin all over again starting at the top to work out the runner-up position. The procedure shall be repeated to determine the third- and fourth-place teams.
The following tie-breaking procedures shall be applied and all regular-season games, both region and non-region, shall count (After each of the following steps have been applied, item C above shall be applied.):
The team with the greatest number of victories.
The team who plays the greatest number of teams who win 50 percent or more of their games.
The team who has the greatest number of victories over teams winning 50 percent or more of their games.
The team whose opponents have earned the most victories.
The team whose opponents have received fewer defeats.
Coin Flip