Do you need a tutorial on Rooney Mara, the 26-year-old ingenue who managed to parlay two striking scenes in The Social Network into winning the coveted lead role of Lisbeth Salander in David Fincher’s English-language version of The Girl With the Dragon Tattoo? Then we suggest you enroll in Tanner Hall, where Mara stars as a boarding-school girl whose senior year becomes awfully complicated, thanks to a scheming friend (Georgia King) and a tentative romance with a much older man (Tom Everett Scott). The movie was directed by Tatiana von Furstenberg (and features exclusive designs from her mother, Diane von Furstenberg) and Francesca Gregorini (Ringo Starr’s stepdaughter), and Vulture’s got the exclusive trailer premiere for you in advance of Tanner Hall’s September 9 opening. (And if you still need any convincing, Amy Sedaris is in it, too!)