Fifth-graders Katie-Rose, Violet, Milla, and Yasaman seem to have little in common except their flower-related names, but they nurture their new friendship through a social-networking site and a campaign to have healthier snacks served at school.

"Paul Walden is not an alpha lobster, the hypermasculine crustacean king who intimidates the other male lobsters, beds all the lady lobsters, and "wins" at life. At least not according to the ego-bursting feedback he's given in his freshman seminar. But Paul finds a funny, faithful friend in Roby Smalls, and maybe -- oh god, please -- he's beginning to catch the interest of smart, beautiful Natalia Gutierrez. Cruising through high school as a sauced-out,...