I can't get my head round the argument that keeps cropping up, that over half of children have taken up the trip, so that makes it perfectly legitimate that they get to go and the minority don't.
Within school when does the fact that over half are able to do something make it acceptable that the minority don't?
Over half are able to read and write, a minority can't, but hey that just reflects society.
Over half are able to access the curriculum, a minority can't due to their SENs, but hey that just reflects society.
Over half the children are happy at school, a minority aren't due to being bullied, but hey that just reflects society.
I admit I'm picking inflammatory examples, but I don't think the argument that over half the children's parents can afford to send them on trips and a minority will never get the chance but hey that's real life, is a million miles from these other examples.
I don't think financial inequality is acceptable in school.