Not everything does There are certain things like maths that you need to learn. But then you could have a calculator as-well. Whats the point of history? To teach people about the past when will that ever come up in your job. Science? ... Should be optional for students that want to be a scientists. But others don't so why should we have to learn it. My teacher is convinced that she should only teach what will make a difference in life. The only time she dosent is when she has to.