In a sane world, they simply wouldn't worry about it. Here, we have a mandated number of days kids need to be in school. I think it's 180. They play games with what counts as a 'day in school' to make up the minimum, where there's days fuckall is being done, but it counts on the checklist, so the games can continue.
The sun will still come up tomorrow if the kids are in school for a 178 days. Just deal with it, and get on with life.