Anarchist's cookbook at school?

About three hours ago, no joke, I was in school and my principal found a copy of the anarchist's cookbook on my school computer, in Maine we get laptops to bring home and stuff. I had a copy of the book on my computer and intended to read it in school. They also found four pictures, one had a jew joke, one had a woman joke and two had black jokes. They kicked me out of school and will not let me back until I have a risk evaluation done at the local police station. I've seen a psychiatrist in the past and had no problems at all. What am I to expect in the next few days?