DD of colleague is just about to do her GCSEs. She has her hair dyed blonde and black. It is a bit odd but not extreme in any sense of the word. It is against school dress code but it's been that way since last April. Now, out of the blue, she is in isolation and not being taught at a really important time academically.
Colleague is spitting feathers. What is the best thing to do? She can't 'undye' her hair. Can they exclude her for this?