I can kind of understand the person who didn't want '25 year olds' in the same class as her 14 year old girl.
The adults in dds school are referenced and crb checked, have separate toilets and break areas.
A 25 year old man who has come from an horrific traumatic experience in a society where girls are sometimes viewed very differently in her class would bother me. Not because I think all 25 year olds are rapists but because we have rules in place in the UK to protect our children and the refuges themselves are vulnerable too.
But then that is completely irrational because a 14 year old is of just as much risk to her so I cannot explain why it would bother me so much.