In the event of a conflicting tie, the team with the higher Colley ranking will receive the higher OSAA ranking.Ĥ. The two systems generate a list of ranks that are averaged to create a team's overall OSAA ranking. The OSAA is using a combination of a Rating Percentage Index (RPI) system and the Colley Bias Free Rating Method (Colley) for its rankings. What system is the OSAA using for its rankings? The OSAA is ranking schools in the following team sports: football, volleyball, boys soccer, girls soccer, boys basketball, girls basketball, baseball, and softball.ģ. What sports are being ranked by the OSAA? Additional rounds use rankings to determine home or away designation.Ģ. OSAA rankings are used to help create contest match-ups for the first round of championship brackets once the playoff qualifying teams are known and to select teams in certain activities at some classifications.
