Do you want to show a PG-13 movie to your middle school students? It's always better to alert parents ahead of time, rather than finding unhappy emails about the content you are showing after the fact. Most parents are fine with the PG-13 rating, but since 8th grade is that border between 13 and 14 years old, it is always better to ask.
This listing is pre-set for "The Post." It contains a synopsis of the film, as well as the official MPAA rating. You can get my viewing guide for the movie here: https://www.teacherspayteachers.com/Product/The-Post-Viewing-Guide-3842246
This listing is completely editable, so feel free to change it for any movie you want to show. I got all my information off IMDB.com.