Oregon is the only FBS program without a change within it's coaching staff since 2009. Tough profession.
Up in East Lansing though, Michigan State's defensive staff has been able to stick together since 2003, when Mark Dantonio assembled them after being introduced as the head coach at Cincinnati. Going into this season, the staff has been together an impressive 9 seasons. That's unheard of.
In the video below Dantonio explains that the continuity on the staff has allowed them to take the team to new heights. Also, having the defensive staff stick together for so long has allowed them to try out some different things as spring ball has progressed as well.
Keeping the same staff together on the defensive side of the ball has helped them put together back to back 11 win seasons and rank in the top 10 nationally in most every major defensive category (#7 in sacks, #6 in total defense, #9 in rushing defense, #10 in scoring defense).
The Spartans will be put to the test, especially defensively, in their season openers the next few seasons. They'll open up with Boise State this year and next, followed by their season opener against Oregon the following two seasons.