Lowest: Double Vision by Diana Hendry at 1.8 (based off of 5 ratings...); next is Not Just A Summer Crush by C.S. Adler at 2.2, with 15 ratings. I helped ding the former, but I quite liked the latter!

Highest: I've got ten with 5.0 ratings, mostly because I am the only person who rated them (or sometimes 1 other person agreed with me)

Otherwise it's Camp Hope by Sara L. Foust with a 4.79 after 33 ratings -- 4 stars to me.