US Airways apparently is - someone just posted a thread asking about it.

I used to think the minimum school day requirements were stupid, until several years ago when a few districts in our state were out for several weeks and made no attempt to make up the days. Now our state says that if the schools have to miss more than x amount of required days they can ask for a waiver but must show how they have made a good faith attempt to make up as many days as possible. A much better policy than the free for all we had before - sounds like NY has the opposite problem.