No, do not snort anti-depressants. Your nose will hurt for around 15 hours, and you'll be screwed up for 3 days. Runny nose headaches etc..
Not really high but depending on which one they can fcuk you up if you parachute them. Put it under your tongue and it'll hit you quicker because it goes into the bloodstream faster. Get high off of...
Consult your physician for information related to your specific case. As a backup, also check with a pharmacist. There are a number of options.
Depends on the school, but I would inform them about it just in case.
High- - - - - - -The outmost reaches of the universe.