The TWISTR Ratings are an iterative least-squares, score-based ratings system built in the spirit of an Elo model. Team ratings are agnostic to the final result of a game, as only the scoring margins are important when rating teams. No additional benefit is provided for a win or penalty for a loss. The TWISTR ratings for VOLLEYBALL incorporate two key concepts:
The RATING represents the number of sets a team would be favored by against an average opponent. Teams with a positive RATING are considered better than average, while teams with a negative RATING are considered worse than average. The RATING can be thought of as a composite of the INDEPENDENT (INDY) rating, in which the time a game was played does not matter, and the FORECASTER (CASTER) rating, where recent results are weighted more heavily.
Both the STRENGTH OF RECORD (SoR) and Z-SCORE (Z-SCR) are resume ratings - SoR only considers a team's win-loss record and is independent of margin of victory, while Z-SCR is a blend of RATING and SoR.
| TWISTR IHSAA TEAM RATINGS | SCHEDULE & RESUME | COMPONENT RATINGS | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| RANK | TEAM | CLASS | RATING | WIN | LOSS | SoS | Rk | SoR | Rk | Z-SCR | Rk | INDY | Rk | CASTER | Rk | |
| 1 | Indianapolis Roncalli | 1 | +6.03 | 30 | 0 | .335 | 1 | +.665 | 1 | +2.94 | 1 | +6.02 | 1 | +6.03 | 1 | |
| 6 | Indianapolis Cathedral | 2 | +3.20 | 21 | 8 | .425 | 2 | +.298 | 2 | +1.81 | 2 | +3.16 | 7 | +3.22 | 6 | |
| 14 | Leo | 3 | +2.29 | 21 | 1 | .925 | 28 | +.031 | 4 | +1.24 | 4 | +2.46 | 13 | +2.18 | 16 | |
| 18 | Indianapolis Chatard | 4 | +2.06 | 13 | 10 | .492 | 3 | +.072 | 3 | +1.24 | 3 | +2.15 | 16 | +2.02 | 19 | |
| 19 | Brebeuf Jesuit | 5 | +2.02 | 8 | 8 | .542 | 4 | -.043 | 6 | +1.07 | 6 | +1.93 | 20 | +2.06 | 18 | |
| 22 | Columbia City | 6 | +1.79 | 22 | 6 | .788 | 8 | -.001 | 5 | +1.08 | 5 | +1.82 | 21 | +1.76 | 22 | |
| 26 | New Palestine | 7 | +1.57 | 14 | 10 | .699 | 6 | -.114 | 7 | +0.87 | 7 | +1.66 | 24 | +1.52 | 26 | |
| 32 | Guerin Catholic | 8 | +1.24 | 12 | 12 | .650 | 5 | -.151 | 9 | +0.75 | 8 | +1.37 | 31 | +1.16 | 33 | |
| 34 | Madison | 9 | +1.11 | 19 | 10 | .798 | 10 | -.143 | 8 | +0.73 | 9 | +1.09 | 34 | +1.15 | 34 | |
| 38 | Illiana Christian | 10 | +0.69 | 14 | 12 | .761 | 7 | -.223 | 14 | +0.53 | 10 | +0.66 | 38 | +0.71 | 38 | |
| RANK | TEAM | CLASS | RATING | WIN | LOSS | SoS | Rk | SoR | Rk | Z-SCR | Rk | INDY | Rk | CASTER | Rk | |
| 39 | New Haven | 11 | +0.54 | 17 | 10 | .854 | 12 | -.222 | 13 | +0.50 | 11 | +0.57 | 39 | +0.54 | 40 | |
| 42 | Greenwood | 12 | +0.33 | 22 | 9 | .903 | 22 | -.194 | 11 | +0.49 | 12 | +0.24 | 46 | +0.38 | 42 | |
| 46 | Norwell | 13 | +0.20 | 16 | 6 | .942 | 31 | -.213 | 12 | +0.44 | 14 | +0.31 | 44 | +0.14 | 48 | |
| 47 | Evansville Memorial | 14 | +0.19 | 17 | 6 | .924 | 27 | -.185 | 10 | +0.48 | 13 | +0.05 | 52 | +0.27 | 44 | |
| 49 | Heritage | 15 | +0.09 | 9 | 9 | .838 | 11 | -.336 | 17 | +0.24 | 17 | +0.18 | 48 | +0.04 | 51 | |
| 53 | Fort Wayne Concordia | 16 | -0.01 | 12 | 9 | .856 | 13 | -.280 | 16 | +0.30 | 16 | +0.08 | 49 | -0.06 | 55 | |
| 56 | Indianapolis Shortridge | 17 | -0.04 | 19 | 9 | .923 | 26 | -.245 | 15 | +0.34 | 15 | -0.14 | 58 | +0.02 | 52 | |
| 61 | Hammond Noll | 18 | -0.33 | 11 | 12 | .879 | 20 | -.403 | 20 | +0.05 | 18 | -0.29 | 61 | -0.35 | 62 | |
| 69 | Silver Creek | 19 | -0.63 | 3 | 8 | .795 | 9 | -.523 | 26 | -0.18 | 22 | -0.67 | 69 | -0.58 | 69 | |
| 72 | New Castle | 20 | -0.66 | 8 | 8 | .878 | 18 | -.378 | 18 | +0.02 | 19 | -0.76 | 73 | -0.61 | 71 | |
| RANK | TEAM | CLASS | RATING | WIN | LOSS | SoS | Rk | SoR | Rk | Z-SCR | Rk | INDY | Rk | CASTER | Rk | |
| 73 | Beech Grove | 21 | -0.69 | 12 | 11 | .920 | 24 | -.397 | 19 | -0.01 | 20 | -0.78 | 74 | -0.64 | 72 | |
| 75 | Tri-West | 22 | -0.81 | 10 | 15 | .919 | 23 | -.521 | 25 | -0.22 | 23 | -0.89 | 78 | -0.76 | 74 | |
| 79 | DeKalb | 23 | -0.91 | 8 | 14 | .877 | 17 | -.510 | 24 | -0.22 | 24 | -0.84 | 77 | -0.95 | 79 | |
| 80 | Lebanon | 24 | -0.96 | 10 | 10 | .922 | 25 | -.424 | 21 | -0.11 | 21 | -0.94 | 79 | -0.96 | 80 | |
| 85 | Scottsburg | 25 | -1.37 | 6 | 11 | .949 | 32 | -.597 | 28 | -0.44 | 26 | -1.54 | 87 | -1.28 | 85 | |
| 87 | Fort Wayne Dwenger | 26 | -1.52 | 6 | 11 | .865 | 16 | -.509 | 23 | -0.35 | 25 | -1.54 | 88 | -1.50 | 87 | |
| 92 | Kankakee Valley | 27 | -1.92 | 5 | 17 | .858 | 15 | -.630 | 29 | -0.61 | 27 | -2.06 | 94 | -1.86 | 93 | |
| 100 | Hanover Central | 28 | -2.20 | 3 | 12 | .858 | 14 | -.661 | 30 | -0.71 | 29 | -2.17 | 98 | -2.22 | 101 | |
| 104 | NorthWood | 29 | -2.36 | 1 | 6 | .988 | 37 | -.845 | 35 | -1.01 | 34 | -2.32 | 103 | -2.40 | 104 | |
| 105 | Bellmont | 30 | -2.37 | 3 | 10 | .932 | 30 | -.699 | 32 | -0.80 | 31 | -2.24 | 102 | -2.44 | 107 | |
| RANK | TEAM | CLASS | RATING | WIN | LOSS | SoS | Rk | SoR | Rk | Z-SCR | Rk | INDY | Rk | CASTER | Rk | |
| 107 | Indianapolis Herron | 31 | -2.46 | 4 | 16 | .878 | 19 | -.680 | 31 | -0.79 | 30 | -2.50 | 108 | -2.43 | 105 | |
| 112 | Crawfordsville | 32 | -2.73 | 3 | 18 | .956 | 33 | -.815 | 34 | -1.05 | 35 | -2.72 | 113 | -2.74 | 112 | |
| 113 | East Noble | 33 | -2.82 | 2 | 12 | .882 | 21 | -.736 | 33 | -0.95 | 33 | -2.62 | 112 | -2.92 | 113 | |
| 115 | Peru | 34 | -3.06 | 1 | 10 | .980 | 36 | -.890 | 37 | -1.22 | 36 | -3.09 | 116 | -3.05 | 115 | |
| 119 | Indianapolis Attucks | 35 | -3.19 | 4 | 4 | 1.000 | 39 | -.500 | 22 | -0.69 | 28 | -3.09 | 117 | -3.25 | 120 | |
| 125 | Shelbyville | 36 | -3.65 | 1 | 26 | .929 | 29 | -.891 | 38 | -1.35 | 37 | -3.63 | 126 | -3.66 | 125 | |
| 127 | Purdue Poly Englewood | 37 | -3.86 | 5 | 7 | .956 | 34 | -.539 | 27 | -0.89 | 32 | -4.03 | 128 | -3.77 | 127 | |
| 131 | South Bend Washington | 38 | -4.79 | 0 | 5 | .975 | 35 | -.974 | 39 | -1.71 | 38 | -4.77 | 131 | -4.78 | 131 | |
| 134 | Indianapolis Washington | 39 | -5.99 | 1 | 6 | 1.000 | 38 | -.857 | 36 | -1.80 | 39 | -6.04 | 135 | -5.97 | 135 | |