Understanding the Metrics

Our mission is to promote High School Boys Basketball by providing a rankings system that is math-based, and includes every team. These rankings are intended to supplement the current BC Basketball Top 10 rankings, and be a tool for coaches and rankings-makers to assess teams.

RPI

RPI is determined using the winning percentages of the team and it’s opponents. It does not use margin of victory (how much a game is won/lost by). It is calculated by

• RPI = (0.25 * Win%) + (0.5 * Opp.Win%) + (0.25 * Opp.Opp.Win%)
• Win% - your own team’s winning percentage.
• Opp.Win% - the average winning percentage of all of your opponents.
• Opp.Opp.Win% - the average winning percentage of all the teams your opponents have played.

An RPI of 0.5 is average, while an RPI of 0.6 or higher is a high-level team.

SRS

SRS is determined only using each team’s average point differential (margin of victory) and those of the teams it has played. It does not consider wins and losses, so a loss by 1 point may be considered similarly to a win by 1 point.
This metric is recommended as the most accurate of the metrics we use to predict team strength.
Each teams rating is calculated by it’s point differential. We then find SRS:

• SRS = Team Rating + Average of Opponent’s rating
• These ratings are averaged out iteratively until each team has a stable value.

This ranking system is predictive so we can use SRS to predict future results.

• For example, a team will an SRS value of 10 will be predicted to beat a team with an SRS of 3 by 7 points

We can also determine strength of schedule by comparing a teams SRS to their point differential. That is, the difficulty of their schedule based on the teams they’ve played.

• The greater the SRS value is than a team’s point differential, the greater the strength of schedule
• A team with the same SRS and point differential indicates a team with an average strength of schedule
An SRS of 0 is average, while an SRS of 35 and above indicates a high-level team.

ELO

ELO is a commonly-used metric to rank teams in chess. Teams start with a ranking value of 1500, and gain or lose points depending on wins and losses. Like RPI, the margin of victory is not considered here. The amount of points the team gains depends on the ELO value of the other team, and how many games the team has played. Adjustments have been made to the original metrics so that teams that have played a different number of games can now be compared fairly. However, this required a minimum of 10 games from a team to be fairly ranked. (The other metrics only require 4 games for a team to be ranked.)
We can also compare ELO rankings to predict the chance of winning a future game.

• A team with an ELO that is 100 higher than its opponent has about a 64% chance of winning
• A team with an ELO that is 200 higher than its opponent has about a 76% chance of winning
• A team with an ELO that is 400 higher than its opponent has about a 91% chance of winning

A team with at least 10 games and an ELO of 1500 is considered an average team, while an ELO of 2100 indicates a high-level team.

Ranking Tables

This website contains 3 different ranking systems: RPI, SRS, and ELO (combined only, new for 2026). You can also view teams grouped by zone in the Zone Rankings tab, or sorted alphabetically by name , which can be done by clicking the team hyperlink at the top of any ranking table.
Rankings are done by season, and can be combined or tiered.

• Combined rankings use all games for the season, and all teams.
• Tiered rankings use only games which involve two teams in the same tier, and only teams from the chosen tier are listed.

We recommend using combined rankings for the most accurate metrics.
Each table contains some additional data:

• Win % Winning percentage.
• PPG Points per Game. This is averaged across all games.
• Op.PPG Opponent’s Points per Game.
• Pt.Diff Point Differential. This shows how many points a team wins a game by, on average. A negative point differential means that a team is outscored by their opponents on average.

Team Pages

Each team has it’s own page for the year. You can find a team page by clicking on Team Search and searching for your team, or clicking on the team’s name in any rankings table. (On a rankings table, you can use Ctrl-F to search up your team quickly as well.)
Each team page contains:

• The team’s data, including metrics rankings within their tier, and combined.
• The team’s games from the season. If there are any errors in this list, contact ashermayan@gmail.com