Home-Made Rating Systems
The Washington Post released a new "top passer" ratings system for high school quarterbacks today.
The formula (click here to see the graphic that explains it) is fairly complex, involving touchdowns per attempt, interceptions per attempt, a modified touchdown-to-interception ratio, completion percentage, and yards per attempt. There are some "weird multipliers" in there to convert the scores into an easier-to-understand 100-point scale.
The NFL has a similar scale, but with a maximum score of 158.3, which confuses a lot of people.
For high school football fans, the new rankings for the top 20 high school quarterbacks put Tyler Campbell from Good Counsel in Olney in first place with a 97. Bryn Renner of West Springfield is the highest rated Fairfax County QB, ranking 6th with a 93.6 rating. My high school, I'm sorry to say, has not made the list. (A full list is online as well.)
For math people, what do you think of this formula? Does it make sense?
And have you ever devised your own rating system for anything? Can you share it with the group?
I've never created a formula like this, but my colleague Jay Mathews developed a simple way to rank high school according to the rigor of its classes. The Challenge Index is both controversial and extremely influential.
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