I just checked my son's secondary school PSHE curriculum and they will have a lesson on gender identity. The materials aren't available online but the notes say they are using the accepted definitions. Well, I don't accept GI exists. I think it is a controversial concept that is far from being accepted wisdom. I'm thinking of challenging it (as I would if the school were teaching creationism instead of evolution) but then the thought occurred to me, is GI protected in UK law? I'd be in a weak position if I'd argued it wasn't an accepted idea if it is in fact endorsed in law. A quick search gives me a yes, GI is protected but further reading suggests no. What is the MN take?