The Five Factors Behind the NCAA's NET Ranking System

Get ready to hear a lot about team value index, net efficiency, winning percentage, adjusted win percentage and scoring margin.
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In August, the NCAA Men's Basketball Committee announced the introduction of its new ranking system, the NCAA Evaluation Tool, or NET.

NET will be used to evaluate Division I men's basketball teams in replacement of Rating Percentage Index (RPI). The committee announced that the evaluation tool would be implemented with the goal of ensuring fairness.

On Saturday,'s John Gasaway shared a graphic reportedly sent to Division I teams which demonstrates the five key factors that the NCAA will use to calculate NET rankings.

The five factors: Team Value Index, Net Effeciency, Winning Percentage, Adjusted Win Percentage and Scoring Margin. Below, we explain the components of each.

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Team Value Index

Team Value Index is an algorithm set up to reward teams who beat other good teams. It's a results-oriented component of NET and only factors in results of games played against Division I opponents.

Team Value Index is based on game results. It factors opponent, location and the winner, which produces a Team Value Index score.

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Net Efficiency

Net Efficiency is a calculation of offensive efficiency minus defensive efficiency.

The formula for offensive efficiency is set up as follows:

Field goal attempts minus offenisve rebounds plus turnovers plus (.475 x free-throw attempts) = total number of possessions

Total points divided by total number of possessions. The number produced represents a team's offensive effiency.

The formula for defensive efficiency is set up as follows:

Opponent's field goal attempts minus opponent's offenisve rebounds plus opponent's turnovers plus (.475 x opponent's free-throw attempts) equals total number of opponent's possessions

Opponent's total points is divided by opponent's total number of possessions. The number produced represents a team's defensive effiency.

Offensive efficiency minus defensive efficiency equals a team's Net Efficiency.

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Winning Percentage

Wins divided by total games played equals a team's winning percentage.

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Adjusted Win Percentage

This metric is a weighted value based on location and result.

Road Win: +1.4
Neutral Win: +1.0
Home Win: +0.6
Road Loss: -0.6
Neutral Loss: -1.0
Home Loss: -1.4

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Scoring Margin

This value has a point differential capped at 10 points in each game. All overtime games are capped at one point.

Scoring Margin equals team score minus an opponent's score.