Can someone tell me what my dream represents?

Well, I'm not God, so I can't say for sure. I find it interesting that the friends at the current school were actually friends from the past that you were hanging out with. Maybe the earthquake means that your past was a disaster in a way in that those people are not or were not a good influence or not meant to be. Or it could go the other way and mean that you are in a hostile environment and need to remember the good qualities of people from the past. The authority figures get killed, so you may have a problem with authority or you sense that they are full of it, etc. It could just be that you need to be careful at school and make sure that you hang with the right crowd. Sorry for the long answer. Sweet dreams!