What is the most important thing you’ve learned?
Can anybody truthfully say it’s something like the quadratic formula you learn in tenth-grade math, or the number of different population pyramids (there are three, I had to dig through my notes for that one) you learn in ninth grade geography?
As tempting as it is to say that the single most important thing you learn in high school is that the mitochondria are the powerhouse of the cell, let’s be real; it’s probably not. In fact, a lot of the knowledge you learn in high school is probably information that you learn during the course, cram into your head for the unit tests and the final exam, and then when the course is finished, mostly forgotten.
And that’s okay, but is any of it actually useful? (I highly doubt you haven’t thought or said the words, “When am I ever going to need this?”)