From a column earlier this year:
A little further down in this week’s column (section II), you’ll see the data from this year’s NFL Draft that illustrates the raw value of each star ranking, but for the purpose of enlightening you on the numbers that will be of greatest interest to most of you, know these very basics for the moment based on the data from this year’s results.
a. One out of every 1.43 five-star prospects was drafted in seven rounds.
b. One out of every 5.16 four-star prospects was drafted in seven rounds.
c. One out of every 13.97 three-star prospects was drafted in seven rounds.
While Strong was at Louisville, he averaged 16 three-star prospects each year from 2010-2012, which means that the national average suggests that 1.14 players from each of those classes would emerge at some point as a drafted NFL prospect.
All told, seven players that arrived as three-star prospects under Strong were drafted this
weekend, which means that on the average, one out of every 2.28 three-star prospects recruited by Strong was eventually developed into an NFL drafted prospects.
Basically, Strong spots and develops three-star prospects better than the rest of the nation develops four-star prospects by a considerable margin and nearly as well as the rest of the nation develops five-star prospects.