>She and I spoke last night and she is increasingly pissed off that people who are in her classes, who don’t do the work, and don’t understand the material get all A’s because they’re using some form of GPT to do their assignments, and teachers cannot keep up

How do they do well on tests, then?

Surely the most they could get away with is homework and take-home writing assignments. Those are only a fraction of your grade, especially at “excellent” high schools.