Actually, that's not correct. They have to have policies, yes. They have to have parent info, yes. To cover the walls with pages and pages of brightly coloured paper and words, as many ABCs do, well, that's actually not in the Regs of any state.
Actually - I am the director of a childcare centre, so I DO know - some of it is state regs, alot of it is requirements to fulfill certain aspects of the National Accreditation process. I haven't actually been into an ABC so I can't comment on how much stuff they have up, I have quite a bit in my centre and yes we have biters, but it has nothing to do with over or under stimulation (or colourful pages in the foyer - mine are not in the rooms anyway). Some children are just biters.