Been in Alaska since 1978. Most children reported by teachers or doctors to have some question of having to be the victim of abusive behavior at home eventually become "frequent flyers" in the system since the abuser does not stop abusing but they may try to hide it better. You appear to allude that the child is called in to OCS by a teacher and is snatched away on sight and the parents are put on the spot of defending themselves that is rarely the case, the OCS workers generally already know a lot of these kids at risk and who their families are. Also abusive families often become generational abusers and families that have a lot of social problems.