In the average student's lifetime, they'll spend about 7,475 hours inside a classroom from their primary years until the end of high school. That totals up to about 311 consecutive 24-hour days spent sitting at a desk while a teacher instructs you. I don't think I need to explain how absolutely crazy that is.
When you really think about it, the majority of our childhood and adolescence is spent stuck inside classrooms. And while this certainly teaches us valuable educational lessons, it also means we spend more time being students than being children.