Not Hyperbole, not Idiom, not Metaphor, so it must be Personification
Like people shouldn’t be judged or scored based on how they look- it can make them very self conscious along with those who are watching.
is bad for your health and
I believe that you should definitely set your own example by not laughing or deriding that other student. If they do something wrong, you shouldn't laugh at them or mock them, but rather try to help them. What you can do as well is ask that other student nicely to stop deriding other students because of a mistake they may have made.