Seb- There is excellent advice here. Read through and think on it. For my ownself, in yr shoes, I'd look at the drugs scene - get a handle on the disease then, later, can go the NSD route? Or LDN/NSD route. When you are more independent to make your own path? That is away from school, no one peering over yr shoulder and, with more confidence.
And, heigh, complain away. Helps to discuss stuff, chew the cud as they say. OK?
Take care.