I would agree w/ post 3.
It could be just a dumb thing high schoolers do, it could be thought of as a generic act of rebellion.
It would be premature to believe just based on that, that he favors the National Socialist Party.
And to post 25- Yes I can see the act of creating that swastika could be considered offensive by any Jewish person that took it seriously. But in the one particular, limited example you quoted, you have misunderstood the student’s complaint. His complaint is the hostile environment being created AFTER he was originally punished for the initial act. His complaint isn’t with the punishment. Posting one offensive symbol, one time, is sure offensive, but probably falls well short of “creating a hostile environment”. If we define a hostile environment so broadly that it includes just one thing we find insulting, then almost everyone lives in a hostile environment every day!