To test the difficulty of a college football schedule, you have to look at two major things -- non-conference showdowns and in-conference road games. Taking both of those factors into account, here is our list of the 5 Hardest Big Ten Football Schedules For 2015:
5) Purdue Boilermakers
Non-Conference Slate: at Marshall, Indiana State, Virginia Tech, Boiling Green
Tricky Big Ten Road Games: Michigan State, Wisconsin
This schedule will be tough for Purdue to navigate (most schedules would be), and they didn't do themselves any favors by scheduling Virginia Tech out of conference.