Hi Female I read this the other day and I thought it was a useful piece about discrimination and how laws are applied.
womansplaceuk.org/2020/07/02/legally-this-is-not-a-trans-rights-issue-its-a-sex-rights-issue-a-blog-about-boxes-audrey-ludwig/
Something to look out for is how UK law and EHRC uses different terms. The EHRC guidance on this is long overdue now.
Anyway, in regards to your very sensible, worthy questions, based on my understanding, I'm not a lawyer and sadly cannot provide legal links but I hope this is useful:
What happens if a student misuses self id, eg a boy demanding access to female spaces?
The school could deny and ask the boy who says he is trans to change on his own. But Leo Waddle spoke of how the school was approached by Press for Change and they were 'forced' to treat Leo as a boy, and a couple of weeks ago, at the Black Trans Lives Matter march a girl who says he is a boy was applauded with the news the same had happened in the school (Katie) attended.
Schools need to understand they can say no and seek a compromise.
How would pshce lessons work eg period talk, where single sex lessons are used at times?
The school will have a policy on this, I think both mixed and single sex lessons are taught for PSCHE. You can opt out until 3 terms before the child turns 16. From Sept you can't opt out of RSE though, but I think there might be a delay on this due to Covid and schools not being able to consult with parents...?
What happens if a member of staff is trans with self id or a grc- changing room supervision, delivering pshce lessons, single sex accommodation on overnight trips etc?
Male teachers are not meant to be the only adult in rooms where girls change (sometimes it s a classroom not a changing as such) for a teachers own protection against accusations of misconduct. (I think)
The case of girl guides is key in the question for overnights, risk assessments and insurance policies apply and I think I heard very recently about a girl who thinks she is a boy, being denied sleeping accommodation with the boys and had a delegate room that the school paid extra for.
What is pupils using a disabled now renames unisex toilet means a disabled pupil has to wait or be denied access?
This would be discrimination against the disabled pupil surely?
What about a girl id ing as a boy and wanting to play contact sports like rugby? Could staff refuse?
Yes on the grounds of safety. At 8 yo kids are in separate (old NSPCC guidelines), single sex toilet facilities and sports is single sex in puberty for obvious reasons. To allow it would require a risk assessment and health insurance surely? I've haven't heard of this happening at a school but most UK sports groups do apply self ID. (British gymnastics etc)
Will staff be compelled to use preferred pronouns? Fellow students? What if they won't? What if people with autism misgender others not on purpose?
Not schools but a teenage boy on the spectrum did get a fine for asking a question of a community police officer who is trans
www.womenarehuman.com/autistic-teen-found-guilty-of-hate-crime-for-asking-police-officers-sex-autism-group-condemns-prosecution/
You could also look into the teaching Unions for more. Honestly I would gather all your questions and submit directly to the school HT and governors. It's a great time to do it since all this is really being questioned right now at senior government level and the trans toolkits are being withdrawn left right and centre as Truth says.