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.
It’s clear that Little is never going to be an elite fantasy wide receiver but that doesn’t mean that there isn’t some value in a reliable WR3/WR4. There’s upside here in new coach Rob Chudzinski’s offense just don’t get carried away and overpay for it.