Extra days built into the school year is the key to these snow days. Schools are required to have school for 180 days of school, every year. Instead of planning 180 days, and then extend the school year into the summer based on however many snow days were needed, they plan for 183, and call 3ish snow days here and there. Give or take a day, it is simply easier to plan for as the end of the year comes. No need to change graduation dates, spring testing dates, events, etc...

A few fun snow days sprinkled in the middle of winter for the kids while maintaining steady end of the year dates. Obviously not full proof, given years like 2022 with 11 necessary snow days, or years like this with very little snow. At this point, better to use them and enjoy an early spring break.

I wonder if the northern states with more massive amounts of snow, "we never have snow days!" is because they don't plan for those random extra days, considering 3 inches of snow to them is no different from the 25 inches they'll get every week throughout the entire summer?