According to Ben Platt, the shooting schedule is already roughly sketched out, with Richard Linklater planning to follow the basic time line in the original script, which stretches from 1957 to 1976. They are treating each sequence as a short film.
Will be filmed over the course of 20 years, making the release date of the movie somewhere in 2040. Linklater used this method before when filming Boyhood, which took 12 years to complete.
Beanie Feldstein previously appeared in the movie Lady Bird (2017), in which this musical is performed as the high school's fall show. Her character in that film was cast as the female lead in that play, just as she herself would later be cast as the same role in the actual movie in real life.