I really need help...please read...I think I have ADHD.?

There are lots of things you can do for it to get better. For example try exercising often it will help with the restlessness! And as for school, try making yourself be interested and act like what the teacher is saying is the most cool thing you ever heard. Take notes, or chew on some hard candy and squeeze one of those squishy in your hand to help you concentrate. Get plenty of sleep. Try to exercise your mind too by reading books and challenging yourself.