So most policy is geared towards staff who work there given the close contact between them, however there are more general clauses within a number of policies which mention 'any other persons' which constitute parents, carers, guardians, other family members/friends, or even any member of the public.
So a couple of policies I seem to recall we had were:
1) maintaining an environment where children feel secure (obviously an alleged sexual groomer violates this if he is present around other children, even if he is just dropping off/picking up. If any older children or parents google him and see all these articles, any one of them could express they're uncomfortable with him being around the school which would violate this, even though he hasn't been charged there is still a risk to consider in case he is ever found guilty)
2) Taking steps to prevent any staff, persons working for the company, or any other persons/member of the public putting any child in a situation which compromises their health and safety (again similar reasons as above concerning safety and security of children)
3) Taking steps to prevent any staff, persons working for the company, or any other persons/member of the public from physically, emotionally or sexually abusing any child (this is more specific in terms of sexual conduct, and so again even just an accusation of being a sexual groomer would violate this as an accusation still maintains a risk)
Every dance school has their own set of policies, but they tend to all follow along the same line in terms of safety, security and well-being of children, and obviously instances like accusations make things a bit more tricky when there is no charge, but given the amount of fuss its been given the school will have to do something about it.