If it was me, I would say no. Granted I don't have kids. But I've heard of some of this stuff being used in ads ect like the black rock one, I don't think anything would happen but better to be safe, unless it is going to take a lot of time away from his class.
Discussion
This us in-line my initial reaction. I ended up signing the paperwork at the insistence of my wife and kid that I was being paranoid, but this is absolutely a possibility that needed to be considered.