A garrulous, unpopular high school student (Hailee Steinfeld) seethes when her studly brother (Blake Jenner) begins dating her only friend (Haley Lu Richardson). This is the first feature by writer-director Kelly Fremon Craig, and despite the conventional teenpic narrative, her protagonist is richly conceived: in contrast to the stereotypical four-eyed nerd, she’s uncool in the way that most teenagers are, hovering awkwardly outside of social circles and storing up bitterness for every perceived slight. Steinfeld (True Grit) is well cast in the role, proving she can shine with the right material; the supporting cast includes Woody Harrelson, Kyra Sedgwick, and Hayden Szeto.