The List, by Siobhan Vivian

Every year, right before Homecoming, The List is anonymously released into the school, naming the Prettiest and Ugliest girls in each grade.
This had some good characterizations, and an interesting twist, and I read it in on great gulp.
It was a good read, a quick read, and one that went very well into some over-trod territory, and came out with an interesting look at how appearances can be deceiving and how motives can get so twisted.