Behavior issues mostly in school?

Okay, you're 16 now, you should be accountable of your own behavior. You need to find a way to control yourself. You don't need to find a "mental disorder" to use as an excuse for your bad behavior-- you said yourself that you act fine at home, so you CAN control yourself.

I'd suggest searching online for things like "reinforcement," "behavioral therapy," "rewards system," and "token system." See if you, your parents, and your teachers can help you get on a rewards/token system to improve your behavior. I strongly suggest looking up a psychologist who has a background in behavioral therapy-- look for someone with a BCBA at the end of their name (Board Certified Behavior Analyst).

The answer to your problem is within you. You sound very bright and thoughtful. a very willing learner who likes to learn but your anger/frustration is over ridding your goals. So you have to find out why you get angry. Do you have trouble understanding the WAY the teacher is teaching a subject? Do your questions to the teacher get put off? Do you wonder when the teacher/book will get to the point? Is there a purpose to this lesson? Is your spelling, grammar and style of writing/ verbal answers criticized and not the idea you presented? Do you "see" more possibilities than is offered? These are just some of the questions you should ask yourself. As you are getting angry, write done some of the words that enter your mind. Later, in a calm moment read them over and see if you can add more feelings and interpretations. Mental illness my foot!!! so many people see only little pieces of a puzzle and never look for the big picture. i am sure you will overcome these obstacles and do very well in life.

I say a professional child psychiatrist is in order. Your parents need to handle that. I am not sure, but I think it is against the law to keep you out of school without offering some type of behavior modification options for you. If the school is refusing to help, then you need to get a lawyer and make them help you. Every child is guaranteed an education in the least restrictive environment possible and your family pays taxes for you to go to school. Do not cheat yourself out of your own future. It is more important now than it has ever been. If you cannot get a handle on your behavior or have someone else help you do that, then you have a very difficult life ahead. However, you are making the first step by reaching out. Don't stop, keep going because each new step gets you closer to a successful life.

wow, reading this was a reminder of my schooling. i can relate to all of this, ask to speak to someone (head, deputy, counsellor if you have one) in the school and try to rationally devise a plan of action for your return. you just have to hold on to your temper and let them do their thing. it sucks, but if its exams this summer then its only a few months to hold out, then o results day you can flip off the teachers and never have to worry about them again