Strength of schedule is calculated from the opponents projected fantasy points allowed for the PK 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.
[Bailey is one of the most accurate kickers in the NFL, he just needs more opportunities. Bailey hit on 93.5% of his attempts last season. His only two misses on the year were from beyond 50 yards. Bailey also hit 12 field goals from 40+ yards. Bailey's only negative in 2012 was he saw just 31 attempts in 16 games. If Bailey gets a few more chances he can be a Top 5 fantasy kicker.]