Spot on, illi.

I've been in a loving massive depressive slump and mentioned how I was suicidal. Now the schools freaking out saying 'HOLY stuff IF HE CUTS OR SAYS THE WORD Self Delete WE SHOULD SEND HIM HOME!'
Which is rather nice.
Don't, please.
Your body has worked too hard to exist for you to damage it. Find other methods of releasing this and TALK to people, but don't let people shunt you around. Its easy to forget, but you are your own person, just because you are in therapy doesn't mean that the problem is being solved. Some therapists are hopeless, so insist on what you need until you get it, in terms of help. Cutting is no solution, god would I know. To take a slash at yourself when you make a mistake may seem noble, but flagellation never solved issues, at least, not for me. It creates awkward problems of its own, and carries the connotations of 'emo-ism', as you probably know. You need to find a point in life which you enjoy and cling to that.
As for the hate thing, it sounds like your view is a little colored by your mindset, but I am also talking through inexperience, so I make for a poor judge there. If it helps you, then by all means, move, but Blockland really isn't an institution qualified to help you through that sort of experience. :|