Selome Hailu SPOILER ALERT: This interview contains spoilers from the fourth and final season of “Sex Education.” When “Sex Education” premiered in 2019, it followed a timid teenager (Otis, played by Asa Butterfield) with progressive ideals, trying to lead the student body of his repressive high school to sexual liberation. By 2023, when Netflix released the fourth and final season, all of that had changed. Moordale Secondary School shuts down at the end of Season 3, so Season 4 takes place in a whole new world.