Obviously you have no idea whatsoever of the level of thinking of 3rd and 5th graders. Details that you as an adult consider important are of little consequence to them at their age. They were telling you, probably, the things in school that they were doing that were of most interest to them. I'm willing to lay you a money bet that their teachers haven't dropped all of their other subjects in order to try and lure them and their families to the movies.
A TEACHER. Yep.
You know how many losers teach in public schools? Lots. And as you comb higher and higher on the pyramid of teacher tenure, you get a higher and higher percentage of losers; folks who couldn't do other stuff, and stayed in teaching.
Teachers buy into all kinds of agitprop and media-driven social tinkering, and while Texas may be different, I think his story does cite a case in which a course of study was undertaken because of a movie.
Lots of teachers who prefer not to plan out a lesson will fall back on some kind of film, and it's a shame.
But lemme guess --you're a teacher, right?