I am a student. And I knomunity with others.
So the reason why we are learn in school for such a long time is because you will understand that no subject you are taking is a waste of your time.
Math, physics, chemistry, biology, and earth science are researched by all human in the past. On the other word, it is human culture we are learning. But the most important thing is these results were discovered by the people in the past. Right now, we just have to understand it. How simple is that?
In all, learning things from school is not only for you can survive in the society in the future, but also a study of a human race.