So your take on Labour moving away from a ban on teaching gender identity that we would have had and replacing it with a requirement not to “teach as fact that all people have a gender identity” which would be incorrect is that Labour is introducing a “Section 28”?
The classic Labour "we're not as bad as the others, so stop criticising us". These guidelines literally state that schools shouldn't teach kids facts because they're politically controversial.
Children will now learn about how people experience gender and will be better able to understand what is going on if their, or their friends’ experiences don’t match their biology. Things are improving. Couching this guidance in terms of “facts” opens the policy up to evolution as research establishes more of the facts, and where this contradicts what a school is teaching, or what the guidance says in other areas, to challenge in court.
These guidelines are step back, but I can't be arsed to type out an explanation so I'm just going to link the Katy Montgomerie video on this.
I don’t know what you’re getting at here. Do your chromosomes change as you get older? If you don’t call it biological sex, what do you call the aspect of sex which does not change through life?
Biological sex is a really complicated and not at all like it's been made out to be, any definition of biological sex will have numerous exceptions that prevent it from being the simple end-of-debate definition anti-trans types want it to be. There's a reason the Supreme Court didn't bother to define it, just stating it's whatever was recorded on your birth certificate originally.
This part:
Imagine if the government held this view for any other issue where's there's a public debate, like the view that vaccines are a public health benefit is controversial these days, should schools avoid 'endorsing any particular view' on vaccines to avoid offending anti-vaxxers?
I'm curious what you think gender identity means here. You state that sex is binary 'with exceptions' and should be taught as such, but I imagine the number of people without a gender identity to be fairly small (I can't image there's that many agender people). Do you think cis people don't have a gender identity?
So not a binary. Male, female and exceptions makes three, not two. Intersex people make up an estimated 1.7% of the population, they deserve more than just to be a footnote. What harm does teaching kids that sex isn't binary, but bimodal, actually do?
There's more to biological sex than chromosomes, things like hormone levels, muscle mass, other secondary sexual characteristics play a part and aren't static. A trans woman who has taken oestrogen for a while will have a muscle mass akin to a cis woman's.
The government also hasn't actually said what it means by 'biological sex' anywhere, you're just assuming chromosomes because that's what you believe.