They should be imo, 1" at start of school time is irrelevant for this storm. Temps are in the mid 20s and with another 1-3" on the way with sleet and freezing rain on top of that and then ending as some snow, it's the right call. Not a delay type situation. If this were march it was like 32/33F wet snow that mostly accumulated on grass it would be a different story, so im not surprised at all.