Gloucestershire Healthy Living and Learning is the site provided to schools in the county for their curriculum teaching. This site is not linked to anywhere I can fine on NHS or LA sites, despite being funded by them, and nor do schools I know of tell parents about it, or link to it themselves.
They cite Stonewall as a partner org.
This resources page is for KS3 and KS4 (11-16 year olds) kids - and it has a leaflet for teachers to give gender questioning kids. We know that 75% of them will be girls, and roughly half autistic - many with complex trauma profiles, according to the Tavistock evidence. Almost all will also be under the age of consent. So we're talking an immensely vulnerable group of children. And this is in the resource teachers are given for these children:
Types of sex can include: penetrative, non-penetrative, oral, vaginal, anal, rimming, rubbing, scissor sisters (or brothers… or others), 69, missionary, gay, straight, queer, threesomes, toys, restraint, sub, dom, top, bottom, vanilla, kinky, mutual masturbation, and any type of body engaging in these! Put simply, sex is as diverse as any human activity has ever been. There are as many ways to enjoy sex as there are ways of being human. If a way of having sex feels wrong for you then it probably is, but this just means you need to find a way of enjoying sex that is more pleasurable.
That is the state-sanctioned advice, available on the NHS/LA funded site, for a group of kids who are statistically hugely more likely to be groomed and sexually abused.
And then there's the page on equality and diversity. Run with Stonewall.
It links to trans inclusion toolkits withdrawn across the country after judicial review, because they ignore good safeguarding practice for the children in question, and ignore the rights of children to single sex provision and their feelings about sharing dorms, changing rooms, loos and sporting competition with the opposite sex. Those toolkits explicitly say that the Equality Act allows a person access to single sex spaces on the grounds of gender identity, when in fact the Equality Act says the exact opposite. Changing rooms and dorms are explicitly cited as examples of reasonable exemptions under the Act, where gender reassignment doesn't allow a right to access single sex spaces, alongside hospital wards and sport. All can remain single sex - and they are non-exhaustive examples. Yet the exact opposite is claimed in this advice to schools, and the rights of women and girls in the law completely ignored.
Stonewall link to their own resources on sport - you need teaching credentials to view them - but Stonewall's views on women and girls having any interests at stake where people with male bodies compete in women's sports are well known. What may not be quite as well known is the gulf between the sexes, in sport. Top women athletes can easily be beaten by schoolboys. National women's teams have been beaten by schoolboy teams. The Williams sisters were thrashed, one after the other, by a male player outside the top 200, after he had a drink and a round of golf to prepare. How is that fair, or right? To insist that gender identity, and not sex, should be the focus? Stonewall even think it unfair that international rugby won't allow transwomen to play in women's teams. There is no limit to their views on this. None. And they have that view given to schools as the gold standard for inclusion on this state site.
Stonewall call women who object to being told they must accept that a lesbian can have a penis transphobes... and indicate that parents who question their children's transition may expect social services involvement. On a site for schools.
They link to the withdrawn Stonewall/Gendered Intelligence/Mermaids CPS guidance, that told girls that questioning adult males in single sex women's spaces would make them responsible, if those males were then assaulted in male spaces for not complying with male clothing and behaviour expectations - that they would be responsible for male-on-male violence, if they sought to set boundaries around women's spaces that are statistically proven to keep us far safer - and that any such questioning could even be a hate crime. It also explicitly said that it's worse to bully over sexuality or gender identity than race or disability. And no reference to bullying on grounds of sex at all. None. We have a rape on school premises reported (and we all know most such assaults are never reported) every single day of the school year, yet the mere idea that girls may suffer harassment on the basis of sex is just erased as an issue altogether - curious, in context. Or perhaps not. Perhaps recognition that women and girls are at specific disadvantage because of our bodies, and the best way to mitigate that being single sex provision for areas where we are vulnerable, might not be entirely where they were going with that one. 
There's even a link to a fundraising pack - for an, "Equalitea." So a highly controversial lobby group, agitating for changes in the law that adversely impact women and girls, are allowed to ask teachers to fundraise for them on a state-funded schools site. The law says all political views given to children in schools must be balanced, and an opposing view would be that of Transgender Trend - a safeguarding group, seeking to protect kids from early transition on child protection grounds, as well as the rights of girls to single sex spaces, and considered sufficiently reputable that the High Court allowed them to intervene in the Tavistock case - while denying Stonewall permission, twice. But the sole mention of them on this site is by Stonewall, when they trash them. Again, the law says balance on active political issues is mandatory. So where is it, then?
If this is all so legit, and there's no problem, then why don't most parents have a fucking clue it is happening?