[lazyasciiart]

I have picked up my sisters children from four different nurseries over the years, and absolutely none of them would let you pick up a child without having had the parent previously give your name and identifying information to them. One of them I had to go in and show id before i was on the list. And even then they had to tell the nursery specifically each day that I was picking them up instead of a parent. The big risk for kidnapping at nurseries or schools is non-custodial parents. This means the threat model is someone who knows the children, knows their schedule and is recognized and possibly welcomed by the children. Learning what time they normally leave is worthless.