I found this to be a pretty good article with some insight on Tom Herman and his progress thus far at Houston. I don't think these numbers can be skewed:
After highly productive stints at Rice, Iowa State, and the past three seasons at Ohio State, Herman has transformed Houston’s offense into the nation’s sixth-best in both points-per-game (46.4) and total offense per game (573.4 yards). Under Herman’s direction, junior QB Greg Ward Jr. (+18.4 grade) is excelling in the dual threat role much like J.T. Barrett did last season for Ohio State.
Every offense he touches turns to gold it seems, and it looks to be accelerated at Houston. Another tidbit I found interesting was this:
Along with Jim Harbaugh at Michigan and Jim McElwain at Florida, Tom Herman is another example of something that’s becoming more and more evident with each passing week of play — coaching matters.
Really proud of Herman* and what he is doing down in Houston. I'll never forget how he really came on at the end of last season and brought us a title with the most powerful offense we've seen at our beloved University.
*Tom Herman is a member of Mensa.