Kate Saxton’s “A Good Student” popped up quickly as I searched for "short films".
Peram Hasibi plays a young (male) high school teacher taking money (actually cash in envelopes) for grades, and a (female) student decides to “end it”. He looks like a graduate student, but dressed in coat, shirt and tie. The film doesn't say what he teaches (maybe math?) Maybe this is more like a community college environment.
He doesn’t ask for intimacy (which would be more predictable). And he doesn’t expect power over students.
A relatively straightforward film, which seems to be a film school project.
I was an assistant math instructor at Kansas University in the 1960s and I gave hard tests. At that time, I could have power over who might get drafted because of the student deferment system of the time. That could make interesting fodder for short film.