Public schools in NJ have always had snow days, but what has happened is that kids do not walk to school nearly as much. There's a traffic jam every morning at every school in my district; the principal must meet with the police traffic director and make a traffic plan each year. That's in nice weather. In rain it is even worse, and in snow forget it. And yes, parents will drop their kids at school in the snow if it is open, and then go to work. Now the kid has to walk home in the snow if there is an early dismissal. The superintendent gets heat from parents for that. Mom is not home to stay with the kids anymore either, and neither is dad, and granny is too sick. And are the kids dressed to walk in the snow? No they aren't. Private schools? They don't legally have to make days up. So they cancel easily. Always did.