The ignorance that is pervading this forum when it comes to this subject in particular just boggles the mind.
First off, where on earth are you getting the idea that she's out to teach your kids ' it is alright to change your sex'? What? Little football-playing junior is suddenly going to ask you if he can be a girl for a week? Get real...
Transgenderism is, in a word, complicated. The subject has to actually live the life of the preferred gender for a minimum of one year before any type of transformation is begun. They have to undergo psychological therapy, hormonal therapy, blood work for years. The surgery to complete the transformation is the last item of a long list a transgender must follow.
Quite frankly, the fact that this person really had to live two lives for so long, knowing that one was a lie, shows more strength than most posters have shown here. Also, the fact that for almost 7 decades she knew she was not a 'normal' man, yet tried to live as one anyway must have been a lot harder psychologically than anything she is going through now. Quite frankly, not one single person here or anywhere else is aware of the psychological health of their kids' teachers until it's brought out in such arenas-then suddenly everyone starts arming themselves and with lit torches, march through their village to 'kill the monster'. That mentality shows a lot more instability than someone who FINALLY got their $h!t together.