I wish we knew if they read any of the responses and/or this comment, and whether they took any action.
At least make an anonymous call folks, they'll get logged. If enough complaints are called in they WILL investigate.
Actually, Child Protective Services has to investigate ALL child abuse reports, so the number of complaints is not relevant. All it takes is ONE call. And you don't need absolute proof - just "reasonable suspicion" that a child is being abused is more than adequate.
I have no doubt that's the requirement. My wife is a mandated reporter, we have positive knowledge that some of the incidents she reported were not investigated. I suspect lack of resources.