 I think there has been a cultural shift and a difference in the level of respect that we expect from young people. I think there's also in this, there's a fear of litigation, there's a fear that's driving schools to want to avoid any lawsuit possible and so sometimes I think that can be unhealthy and lead us to a place where we kind of lay our common sense over here and we just go, we just try to avoid the lawsuit and I don't know how much of that. There have been some teachers injured when they're trying to intervene. There's been some students injured as well, but one of my concerns is if you've got to start training teachers on what they can and can't do in a violent situation, when you're in an emergency, it's hard to recall all of that training and so it's going to drive more teachers out because they don't want to, not only do they not want to deal with the violence, they don't want to deal with a lot of new training in order to deal with the violence and so I think there is a root to the problem that has less to do with maybe this policy and more to do with the causes of violence among young