Our county is so big and spread out, and the weather is so screwy, that we often get snow days in perfect weather because a town 40 minutes away got 3 inches of snow.
Just the other day, thunderstorms came through town. My office got 3 inches of rain. My house, 15 miles away, got nothing.
Maybe I'm wrong, but I swear I remember growing up that they didn't shut down every single school in the city when there was snow. The ones that got too much would close, and the ones that didn't would stay open.