I spend 2 hours every Wednesday volunteering at a primary school. I'm usually assigned to work with the most difficult child in the class who I think is autistic or something similar. I'm not a person that typically enjoys being around kids so I find it really challenging. However, I am up to the job. That changed today. He acted as if he wanted to be physically closer to me and later touched me inappropriately on 2 occasions alongside putting his hand in my pocket for some reason. As this is a child (and one who has issues), it doesn't seem like I can do anything, however this behaviour is totally out of order and I'm unsure of what course of action to take. I appreciate that people may have difficulties in their lives, but I don't want to turn up somewhere for that to happen. This is a complicated situation. What should I do?