Scared to go back after the holiday's.

My school holidays are almost over, but I was on messenger a few night's ago and this guy that is one of my friends boyfriends started hitting on a friend of mine from another school and saying that he was single to her, and she told me what he had said, and then emailed me a copy of the conversation. So I was worried about my friend, because he said he dumped her, so I rang her straight away to check if it was true, or if she was ok, and all those things. After calling her I found out it wasn't true and that he had been cheating on my friend for a while now. Later that day he got on messenger again and started to say that he was going to bash my skull in, and jump on my face, normally I wouldn't believe, or take any notice of something like that, but he has done it before, and said he will do more harm than that if my friend dumps him. What should I do about him, last time I was in an arguement about something at school, they locked as in a room, and told us to sort it out ourselfs, I am scared they will do it again. Should I go back to the same school, or change?

He cant touch you.. at least he shouldnt.
Dont be scared...that guys just being a jerk. I think you should tell your friend about how he was cheating and I would just ignore that comment he made about bashing your skull. If you think he was serous then tell someone. or have people around you when your near him.
good luck
=)

They locked you in a room? Is the school looking to be sued?
Talk to your parents and let them know he was threatening you. They should be able to deal with the school. A copy of the conversation would be good...