It’s a movie about eighth grade (roughly, being 13 or 14 years old, for non-American audiences) that eighth graders can’t see on their own because it’s rated R “because of a few choice four-letter words and some squirm-inducing sex talk. On Wednesday, A24, the company behind the film, rebelled against the rating for one night, holding free all-ages screenings in every state. And teenagers came out in droves.”