Teenagers of the opposite sex should absolutely NOT share sleeping spaces, toilets or changing rooms.
Allowing for male and female teenagers to share these single sex spaces is a failure to safeguard all the teenagers.
If we start from a position of kindness then there are many different ways for all involved to feel comfortable and safe, females, males and transgender kids all included.
Imagine a situation where trans girl with male anatomy impregnates a girl because they shared a dorm on a school trip. The outcome would be devastating and traumatic for both children, the trans kid and the girl and the peer group. Very likely the trans kid's gender dysphoria would be massively triggered and they would not be able to focus on developing sound coping strategies for dealing with their inherently challenging status and situation. And the teenage girl would face having a baby or abortion at too young an age, resulting in life long adverse repercussions.
It's unnecessary and unkind to settle for crude, woke mixed sex at will policies, it's lazy governance.
Instead, councils, parent groups and schools should work out how the sleeping arrangements, changing rooms and toilets in educational settings can be organised to protect all children's dignity (including the trans kid obviously) and also their physical and mental safety. It is completely possible for the trans kid or tarns kids on a school trip to have separate sleeping facilities WITHOUT this meaning they are marginalised. It just takes a bit more work and involvement. It could present an incredible learning opportunity for all involved, where we children learn that it's important to kind, inclusive, accept difference and be respectful to each other whilst also upholding health boundaries.
This would involve complex conversations, transparency, maybe counselling and very robust governance.
Children have NOT got the maturity or brain development to handle the repercussions of chucking them altogether in compromising mixed sex situations.
The 13 year old girl who is challenging the system is very brave. Would it be helpful to donate to the safe school alliance?