Football RPI Information
IHSAA FOOTBALL RATINGS PERCENTAGE INDEX
The IHSAA began using RPI in 2018 to determine its at-large playoff qualifiers. Below is an explanation of the system. District champions across all six classifications receive automatic qualification into the playoffs.
The IHSAA’s RPI Formula
Teams will receive RPI numbers ranging between .0000 and 1.000 (higher is better) through three criteria weighted at different percentages.
- Your Own Winning Percentage (37.5%)
- Your Opponents’ Composite Winning Percentage (37.5%)
- Your Opponents’ Opponents’ Composite Winning Percentage (25%)
So, RPI = (.375 x WP) + (.375 x OWP) + (.250 x OOWP).
Three-Way District Ties
New in 2019, only one champion will be named out of each district. Two-way ties are broken through head-to-head competition, but with any true three-way ties for district championships, the automatic qualifying spot as district champion will go to the team with the highest RPI. The other two teams will reenter the at-large field and may qualify for the playoffs through RPI.
Two updates were approved in 2019 to allow head-to-head competition to supersede RPI in select situations following Week 9 competition.
- If two teams are side-by-side for the final spot in the RPI rankings and have played head-to-head in the regular season, the winner of the regular season contest will receive the at-large spot.
- If two teams are side-by-side in the final RPI rankings and played in the regular season, the winner of the head-to-head contest will receive the higher playoff seeding.
The IHSAA will calculate the winning percentage of an out-of-state opponent into a team’s RPI. However, that opponents’ opponents will have a uniform .500 winning percentage assigned.
Teams are neither penalized nor rewarded for playing up or down in classification for their non-district games. A win over a Class A team is calculated the same in RPI as a win over a Class 4A team.
Scheduling & Scoring
The IHSAA assigns districts and district schedules every two years and recommends member schools make non-district schedule requests that suit the goals of their football programs. The RPI takes a team’s entire schedule into account.
RPI does not factor in margin of victory or whether a victory takes place at home or on the road. Wins and losses determine playoff qualification, either via district championship or RPI ranking for an at-large spot.
Cancellations & Forfeits
Because RPI uses averages, if a game is cancelled and cannot be rescheduled, it will not negatively affect either team in the formula.
However, if a team drops its football program once the competitive season has begun, that team will forfeit its remaining games to their opponents. If a team drops its program prior to the start of the season and leaves open dates, no forfeits will be assigned.
The Iowa High School Athletic Association and Iowa Girls High School Athletic Union have an upcoming “Family Week” appearing in Iowa’s Unified Activity Federation calendar for the first time in...
Sites for track and field's co-ed 2021 State Qualifying Meets are now available. These meets are currently set for Thursday, May 13 in all classes for both boys and girls. Qualifiers from these...
Do you have old IHSAA souvenir state championship programs at home or in storage? We need your help! The IHSAA is working to digitize printed archives so that the proud history of Iowa high school...
Sites and assignments for the 2021 spring golf postseason are now available. Sectional meets are set for Friday, May 14, unless otherwise noted. District meets are set for Friday, May 21, unless...
Spring 2021: Return to Competition Published: March 22, 2021 This document should be considered as providing recommendations from the IHSAA for member schools and may be updated before and...
Spring 2021: Return to Competition Published: March 16, 2021 This document should be considered as providing recommendations from the IHSAA for member schools and may be updated before and...
DES MOINES, Iowa – Following Thursday’s regular meeting of the IHSAA Board of Control, district and group assignments for the 2021 and 2022 football seasons are now available. The 2021 football...
Spring 2021: Return to Competition Published: Feb. 26, 2021 This document should be considered as providing recommendations from the IHSAA for member schools and may be updated before and...
By: Karissa Niehoff, executive director of the National Federation of State High School Associations; Tom Keating, executive director of the Iowa High School Athletic Association; Jean Berger,...
Spring 2021: Return to Competition Published: Feb. 22, 2021 This document should be considered as providing recommendations from the IHSAA for member schools and may be updated before and...