Strength of schedule is calculated from the opponents projected fantasy points allowed for the WR position. The best rating is +16 which gives the player the advantage against the defense and indicates an easy opponent, the worst rating is -16 which gives the defense the advantage and indicates a tough opponent.
Hawkins had great 2012, but at 5’7”, 175 pounds, he’s not a guy that is built to be a workhorse. So don’t expect him to build upon his 51/533/4 from 2012. Although, he should be able to repeat.