Gaffer - have you children or kids you know that you suspect have been taught or shown stuff in school that you feel is inappropriate?
I have a 10 year old girl and a 12 year old boy - both are in national primary schools that are not mixed. My girl has had a basic/simple chat in school about their development, periods, what to expect as their bodies change.. nothing on sex yet but they have had good input on inappropriate behaviour by others, boundaries with regards to touching etc.
My boy is in 6th and they have had no sex education at all. I asked him recently and he reckons they get a 'mini-chat' this year, and a 'big-chat' next year in secondary school. Loving the terminology but that aside I would be critical of the lack of interaction by the schools on the topic if anything. We have had our own run through the lot so I am not waiting on the school to do it for me, but there must be plenty of kids in the class who are already experiencing puberty and haven't had the support at home.
Both have had endless input since creche about the different types of families, relationships etc, and both would be very aware and comfortable with the idea of people being straight, gay, trans etc - it is part of their vocabulary and they see absolutely nothing wrong with it as they have no experience of anyone telling them it is. They haven't broached the idea of changing gender yet but I'll have that chat with them no bother when the query it.
I'm not sure you are on the right track with this one to say the least