Taking advantage of CFBStats.com's 5 years worth of sacks-allowed data, I've expanded from my 2011-only sacks allowed per pass attempt to show team-by-team values from 2007 through 2011.
First, some random carnage against Brett Favre.
...with a dash of Brandon Jenkins and limping Jacory Harris.
Voilà. And now for the breakdown.
The below-table features every FBS teams' adjusted sacks allowed since 2007 and their respective FBS ranking (WKU entered FBS play in 2008). SA% = Sacks allowed divided by adjusted pass attempts. ACC teams are color-coded.
Lots of data here for you to peruse. But I'll dispense some of my thoughts.
I had previously said this about FSU's 2011 season:
Florida State pulls up the conference rear and NCAA bottom-of-the-barrel with its 40 sacks allowed (112th) and 9.46% pass attempts ending with a sack. On average, FSU took a sack every 10 to 11 pass attempts. You're just not going to get any sustained successful drives when you're taking a sack at that frequency.
I was shocked to see that Florida State was in the bottom 11 of FBS schools in 2010 and 2011 for adjusted sacks allowed at roughly the same rate. The 2007 rate is low, perhaps to a high-volume of bubble screens and less pure dropback pass plays. But the last two years have just been awful in this aspect of the offense. I tend to assign much more blame to the offensive line over the QB or playcalling, but I'm not solidified in that position yet.
Interestingly, the 5-year mean adjusted sacks allowed for the conference is between 43rd and 104th rankings. Perhaps the ACC is a defensive conference, but the SEC has 5 teams in the Top 50 compared to the ACC's 2.
Though there has been improvement in the 2010 and 2011 seasons for them, Virgina Tech was just abysmal on sacks allowed per pass. 2007, 2008, and 2009 are all near the bottom of FBS. How much of this is on Tyrod Taylor? Or perhaps they spend too much time focusing on run-blocking? Some insider perspective could clue us in on this aspect.
Wake Forest is consistently poor in protection - without a lot of swings up or down interannually. Sometimes bad is bad. Boston College had a great year in 2007, yet has been consistently getting worse, ballooning to 82nd in FBS play last year. Duke, on the other hand, seems to be implementing its pass-heavy offense just fine and getting the most out of its blockers. UVA has done very well in 2010 and 2011. Clemson & NC State are middle-of-the-pack programs over the past 5 years. Miami started the period poorly, but has shown improement. Maryland was terrible in the 2007 and 2009, but fairly decent in the other 3 years. In fact, Maryland produced the 3rd best numbers in the conference last year (29th nationally) - which is not bad for a 2-win team. UNC and GT are consistently below the median team.