OMG, I cant believe that nothing was noticed. I have had to sign accident books for marks I cant even see. I'd be putting something in writing to the director and ask for their behaviour management plan to be explained to you.

the best way to get the girl to stop biting is if one of the other kids bites her. Not that you'd encourage them to, but DS used to bite at daycare, at about 18mths, and one day another child bit him, and he stopped doing it.

They probably are working with the childs parents, but it can be very difficult for them (parents) too, they may also be at their wits end with how to manage the behaviour. Especially if they are trying everything they can and not just ignoring the behaviour.

When it comes down to it though, if anyone is going to be removed from the situation I would expect it to be the child causing the issues, not the other kids who are being impacted by them.