Put it this way...You wont be there forever. It is free to learn. Why not grab the opputunity? (I also hated school so much! The scum that were in it...). You may aswell take what you can from it...See it as like a job? If you ruin it and get kicked out, you will be far behind the averages...
On the other hand, if you wanna get kicked out, go for it. You'll only be wasting their time if your being disruptive...(Also, whatevers happening, they don't know...So speak to them if anythings bothering you)...