We missed one day so far but it was because the electric was out last fall.
We haven't missed any days due to inclement weather. OUr school district is about the very last school in our county to close just because there isn't alot of country rural roads the buses have to travel on. So it kind of bites for my kids when the other schools get off.
Most every school this year is using the 2 hour delay instead of calling totally off. I'm not sure if it is better or not for working parents. I know, for my kids and situation, it is easier to drop them off at my mom's house knowing I don't have to worry about how to get them to school in 2 hours.