When schools implement these transgender 'toolkits', they should be equality impact assessed, either by the schools themselves or by the LEA. Is there any evidence that this has been done? Because any such assessment (properly done) would clearly show the conflicts with the rights of girls.
I think equality impact assessments are so important whenever there is the possibility that the rights of two or more groups may be in conflict.
I also think that any pack or information going into schools should be assessed for how the messages might be received by all children of different ages and with different backgrounds.
For example, giving children the message that they should not bully or harass anyone for being different is a good one. But the message that someone else's identity is more important and valid than your own perception or recognition of facts is really dangerous. As are the messages that children will be receiving about the requirement to loosen their boundaries in order to be kind or because it is demanded of them by adults in order to be obedient.
This is fundemantal safeguarding stuff surely.
For sexually abused children these messages that they will be receiving are especially dangerous. Before a child (who is old enough) even thinks about telling another adult or in some other way 'escape' the abuse, she must first recognise that her abuser is not who he tells her he (or who he identifies as) and then she must have confidence in her ability to recognise this fact. Secondly she must have confidence that the adults around her will believe her recognition of the facts and not believe in the way her abuser presents or identifies himself. The child if old enough will understand and therefore be very anxious that what she is revealing may well be going completely against how everyone else perceives and identifies her abuser. She needs to have the confidence that society does not place higher value on someone's identity over and above others' recognition.
The messages children are receiving are so important and they will often not be the ones that adults think that they are conveying. Especially for an abused child who will find it harder to check her understanding with other adults.
This is just drawn from my experiences. I hope that it makes sense.