Exactly right. K-12 education is nothing more than a jobs creation program for teachers.
People laugh at an “8th grade education”, but that used to be equivalent to what a HS diploma is today, if not more. And a lot of high school graduates still manage to show up ill-prepared for college these days. What a joke.
Most of what is taught in middle schools these days is just filler.
You could go on YouTube and learn everything you need to, for free.