Rating Percentage Index (RPI)
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Basketball News' RPI for ratings of all Division
I Women's teams.
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The Rating Percentage Index (RPI) is used by the NCAA women's basketball committee
to supplement the selection of at-large teams and the seeding of all teams for the
NCAA basketball tournament. The NCAA does not make the RPI available to member institutions
or the public because the data are kept confidential within the committees.
Collegiate Basketball News is one organization that duplicates the RPI that is generated
by the NCAA, using available formulas without input from the NCAA. The four component
factors that make up the RPI are:
Factor I is the team's Division I winning percentage and is 25 percent of the RPI.
Games against non-Division I opponents are not included in the normal RPI.
Factor II is the team's schedule strength; that is, its opponents' Division I winning
percentage. It is 50 percent of the RPI.
Factor III is the team's opponents' schedule strength; that is, its opponents' opponents'
Division I winning percentage. It is 25 percent of the RPI.
Factor IV is the bonus/penalty portion of the RPI. Factor IV first starts with the
"normal" RPI as described by Factors I, II and III listed above. Bonus
and penalty points are then awarded in two different categories. The first is based
on the team's non-conference schedule using the normal RPI ranking of the team's
opponents. Bonus and penalty points in the second category are based upon winning
games against top 50 teams in the RPI, and on losing to teams ranked lower than 150
in the RPI. Bonus and penalty points in the second category vary based upon the location
of the game and are cumulative. A loss to a non-Division I team results in penalty
points.