Speel, I knew some very bad kids when I was growing up. The class under me was one of the worst ever, and attacked bus drivers, teachers, and damaged property. The system did nothing to stop them. One of them was murdered shortly after leaving school, by one of his own gang.
I knew someone too who kept getting kicked out of schools because of his very serious behaviour (putting knives to people's throats, theft, etc). The social seclusion only made him worse and more extreme. I think he's in jail now. The system failed him, and everyone he affected.
And finally, a teacher was raped at my high school. I have no idea who did it (maybe even the guy above), but the teacher never came back, obviously. The system did nothing to protect her.
What do we do with people like that? Keep moving them around? Slap their wrists? Get all touchy feely with them? Why is it the teachers who always get the handcuffs and aren't allowed to do anything about this scum?
No, I'm afraid to say it, but sometimes people need their asses kicked, and hard. If the system isn't working, you need a new system, laws and liberalism be damned. Unless people with your lax views get out of schooling, Eyso, I will never be a teacher. What you call law is one sided, biased, and unfair.