People who have been expelled from a school, what did you do to get expelled?

I was in a difficult situation (((( We managed to look deep in the file trees of the schools computers and got the login info for the district wide admin. From there we had the ability to access any computer in the district and wrote a program to shut down all the computers in the school. Most of us decided it would not be a good idea to run it but one friend did it anyway the last week of school. From the computer assigned to me in our tech lab. I didnt have any knowledege of the event actually taking place. And the cops kept threatening me with cyber terrorism or some crap. Eventually friend confessed, had to work for the district over the summer before they would release his diploma/transcripts