Anyone who was a boy and now operates (if that's the right word) as a girl - ...that's the gist?
So basically still has a penis.
No. Shouldn't be at an all girls school.
A girl who's born a girl but is dressing up as a boy? I think that's fine.
I don't get why people have a problem with this. The GPDST have been around for years. If you don't agree with it, pick a mixed school for your child.