A.V.
As far as school, my stepdaughter would not pay attention, read books at inappropriate times, act out, etc. We had a heck of a time when she was in elementary school. No ADD, just her overexhuberant self.
We sat her down and went over the behaviors that were unacceptable. We talked about why and we asked her what she thought should be done to help her change each bad habit. We also enlisted her in coming up with consequences. We evened out her responses so she wasn't too hard or too soft on herself. Consequences included not having a play date, not getting to watch TV or play a video game at night and not being allowed to go off to play if we were at someone's house. Or she might be left with a sitter instead. We also had her write letters of apology to her teacher or friends parents if she had acted up for them.
We also reminded her of the boy who cried wolf. Her behavior wasn't the same, but doing the same bad thing over and over meant that she was the first one they blamed when someone else did it (like talk loudly in class). If she wanted to be trusted, she had to behave to get that trust.
If she went a day and later a week without a bad report from anybody, she got a treat, like 10 more minutes before bed. She got praised when she was caught doing right.
What do you do when she hits? Have you given her an alternative? Counting to 10, using words, leaving the situation?