he knows what is going on and doesn't seem to care as of yet, or rather he seems to be looking forward to it. we sat him down and told him that we tried to do our best but we can't deal with (we explained the behaviours) anymore and that we have to keep him and the other kids safe so the best way to do that is to send him to a new house where he will be the only kid and he will get new grown ups to look after him.