American high schools start at ~0730, though that's gradually being moved back, and classes end around 1400-1500. So he library being open that late is meaningful.
And as bizarre as this might sound, outside of New York City, unaccompanied children on public transportation is basically not a thing in America. We assume the children are lost / abandoned and the parents are delinquent / trying to get the kid kidnapped by a pedo.
There was a decently widespread news story a few years ago about someone calling the police on a mother because she let her kids go to the park by themselves.
And as bizarre as this might sound, outside of New York City, unaccompanied children on public transportation is basically not a thing in America. We assume the children are lost / abandoned and the parents are delinquent / trying to get the kid kidnapped by a pedo.
There was a decently widespread news story a few years ago about someone calling the police on a mother because she let her kids go to the park by themselves.