Ignore the terrible cover design and the fact that it says "Dating! Driving! Drama!" on the back over the copy.
Like any short story compilation there were standouts and non-starters, but it's worth picking up for the M.T. Anderson one alone (The Fever and Mud Dialogues). It prompted me to browse ancient Greek philosophers in the Standford Encyclopedia of Philosophy (available online!)
Carolyn Mackler, & Ned Vizzini's were also quite good, and from the Megan McCafferty story I will be bumping up the Jessica Darling series on my mental to-read list. I think the problem with writing for an anthology on a certain topic is that it's hard to avoid writing for the topic instead of writing a stand-alone short story.