About 2 weeks ago my son got locked in the bathroom at his school due to a faulty door (he's in kindergarten). Because of that incident he has been afraid to go to the toilet alone so usually his friend from class goes with him. Today it was discovered that instead of going into the second door where the toilet is he has been pooping in the urinal. Today the friend who goes with him saw it and now my son is embarrassed and I can tell he is a little heartbroken. I'm guessing that his friend laughed at him. I'm not sure how to help him overcome this fear since I am not at school with him. I don't know what to do. For now his teacher said she will go with him from now on, but I really want him to overcome this. Any advice?