Booksmart” has a lot going for it. It’s the centerpiece high school comedy of 2019, and it represents modern times well despite fitting firmly into the genre. But perhaps we use the word “comedy” too automatically in stories about high school graduation and teenage romance, because “Booksmart” isn’t all that funny. Really, this film is about best friends – Amy (Kaitlyn Dever, who resembles Robin Tunney at that age) and Molly (Jonah Hill’s sister Beanie Feldstein) – and that part is fine. But director Olivia Wilde’s debut never connects on a big or gut-busting moment. It’s too low-key and casual, regardless of what genre label we put on it.