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 meaningf

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.