Also, the guidance specifically says teachers and schools should NOT work with outside organizations that promote gender ideology and are trying to get it into schools by producing dodgy curriculum materials supposedly promoting "inclusivity" and "tolerance."

Important section:

Ensuring content is appropriate

The safety of children is of paramount importance in school.

Teachers should be aware of age inappropriate material on the internet. Great caution should be exercised before setting any assignment, in class or at home, that involves researching a subject where there is a high risk that a child could accidentally be exposed to age inappropriate material, such as pornography. Particularly at primary level, you should be careful not to expose children to over-sexualised content.

Knowledge about safer sex and sexual health is important to ensure that young people are equipped to make safe, informed and healthy choices. This should be delivered in a non-judgemental, factual way and allow scope for young people to ask questions in a safe environment. Schools have the freedom to develop an age-appropriate, developmental curriculum which meets the needs of their young people, in consultation with parents and the local community.

You should be mindful of the law and legal requirements and be careful not to condone or encourage illegal political activity or the use of illegal drugs.

We are aware that topics involving gender and biological sex can be complex and sensitive matters to navigate. You should not reinforce harmful stereotypes, for instance by suggesting that children might be a different gender based on their personality and interests or the clothes they prefer to wear. Resources used in teaching about this topic must always be age-appropriate and evidence based. Materials which suggest that non-conformity to gender stereotypes should be seen as synonymous with having a different gender identity should not be used and you should not work with external agencies or organisations that produce such material. While teachers should not suggest to a child that their non-compliance with gender stereotypes means that either their personality or their body is wrong and in need of changing, teachers should always seek to treat individual students with sympathy and support.

You should work together with parents on any decisions regarding your school’s treatment of their child, in line with the school’s safeguarding policy and the statutory guidance on working together to safeguard children.

The whole document is worth reading:

https://www.gov.uk/guidance/plan-your-relationships-sex-and-health-curriculum#ensuring-content-is-appropriate

This new guidance from the UK government is a direct repudiation of organizations like Mermaids, Gendered Intelligence, Stonewall and Andrew Moffat's group that have put forward materials like the "Trans Tool Kits," "The Genderbread Person" posters, the "No Outsiders" program, the "sex dice game" and required readings of books like "I Am Jazz" all in an attempt to "queer the classroom," teach kids that some might be "trans," center and privilege "trans" students above all others, expose kids to highly inappropriate sexually explicit materials (porn, kink and descriptions of acts like "felching"), encourage young children to keep secrets from their parents and to view their parents as potential enemies, and teach kids that if they don't buy into all of this it means they are "phobic," mean and guilty of "hate."

Kudos to all the brilliant people in the UK who've worked hard to bring this massively important development about. Such as all the feminists, safeguarding experts and concerned parents on Mumsnet, and such organizations as Transgender Trend, Safe Schools Alliance, Kellie-Jay Keen (Posie Parker) and Standing for Women, Fair Play for Women - and many, many others.