You'll Forget Most of What You'll Learn. What Should You Do About That?
theseedsofscience.pub
theseedsofscience.pub
To add something that this study is not looking at, some of the courses on the higher grades exceed what some universities were teaching decades ago; I know because years ago, I extracted whatever old textbooks online and looked at them. Some of them were pedantic by current standards. Exams too. All these effort and the end was it worth it at all.
Sooner or later, it would completely worthless effort in terms of financial gain from knowledge..