"The notion that a person is really someone of the opposite sex "trapped in the wrong body" is poetic stupidity. It doesn't exist in reality. A person wishing to change their external manifestations to appear to be a person of the opposite sex is someone very unhappy with being their "real" sex and/or believing in some idealized fantasy of how much better it is to be of the opposite sex.
...I suggest, indeed, letting children who wish go to school in clothes of the opposite sex -- but not counseling other children to not tease them or hurt their feelings.
On the contrary, don't interfere, and let the other children ridicule the child who has lost that clear boundary between play-acting at home and the reality needs of the outside world. Maybe, in this way, the child will re-establish that necessary boundary." -- NARTH Scientific Advisory Committee member Joseph Berger, M.D., who feels that society is causing gender identity confusion among children and the cure includes letting kids be bullied for being different.