The two times last year in Nov-Dec when schools weren't closed due to cold and snow, this one school district got many unpleasant calls from parents. More than half the students were bus-delivered to school about 3 hours late plus the 1-2 hour extra time they had to stand outside waiting for a bus.
I'm just glad that my wife and son are at home for extra days and, for a bonus, I don't need to start an engine and drive any of my cars in this kind of temperature.