Teresa, this has to do with the rights of the vast majority and allowing the school administration to handle the very small minority of issues in a tactful and private way. Think of the consequences of what you are proposing. Say a 15 year old girl decides she is a boy today and enters the boys locker room. First, no teacher is going to be in those locker rooms anymore because of the liability issues. So that child is going to be in a room with a bunch of 15 year old boys. Bullying and sexual harassment would probably be the mildest thing that would occur. This disaster is contrasted with what would happen now. That child would be allowed to use a private bathroom and other students would not have much if any knowledge or interaction.