It's not a risk.

It's a fact of life. They DO disrupt the rest of the class (as do those with Autism and other mental problems...all in the interests of 'inclusion' ).

In Primary school my own boy was assaulted by some kid with Autism. I was NOT happy about it I can tell you. I was not interested in the in and outs of his medical condition. I was much MORE interested in the welfare of my child who unbeknown to me had been exposed to such risks every day.

Also, in a Comprehensive school system there is no way to syphon off the brain-dead thugs to a more suitable environment (cage ? ).