I immediately thought of MN when I heard this story tonight! My friend works in a secondary school (Ireland) and they've had a student identify as trans. He had long hair, now wears it tied up and awards skirt. School v accepting and supportive, parents v demanding, almost looking for school to trip up. Use of girls' toilet was asked for and principal denied access point blank, said if he had a 12yo DD he wouldn't be happy (trans student 17). Unused toilet next to office was offered. Done.
I was impressed by his decisiveness and instinctive rationale, I was beginning to think only MN saw the light. He apparently said he knew he could be sued but took a stand and it was accepted.