I'm not going to resummarize the book, but I will say the person who made the list shocked me a little. I can totally imagine this having happened in my school. In fact, I'm not so sure Siobhan Vivian didn't graduate from the same high school I did. Some of the girls there were just. that. petty.
It was well written & it didn't drive me crazy when she jumped to a new character. The story line between the senior girls was incredibly interesting [again, something that could have happened in my high school]. I wish she'd elaborated on the pretty junior's story.