Yesterday they delayed the start for 2 hours because of the snow, and then after 2 hours of school we got calls to the home phone, cell phones, text messages to each cell, and emails, all saying that they were keeping the regular schedule but buses may start 30 minutes early. And one email saying essentially "if you can, please come get your kids". I don't know if it counts as a full day or not.
We've had them cancel school before when we had no snow, although if they have to close one school for snow they will close the entire district. With the terrain here, you just never know what's going on over the next hill. It can be snowing at our house, and raining less than a mile away (but 300 feet lower elevation).