User blog comment:Birdpool/Why the education system in the US needs a major overhaul/@comment-24843074-20170425164812/@comment-24843074-20170426152009

Well how my school does it is that we still have 8 classes, but we have a Day X and Day Y. Day X has 4 classes, and Day Y has the other 4. They alternate each day. If there's an unexpected day off, the days don't change order.