> What is maybe less clear is the benefit of extending formal academic education to 18 and beyond for everyone.
For a democratic society, I think there's a pretty big benefit in making the general population fairly well educated beyond just what it takes to make them proficient at a job.
The point would be to make sure they could reasonably reason about the policies and politicians they are voting for or against.
Now, maybe that can all be covered in high school classes. However, I think a lot of humanity and philosophy classes just don't come in until college level classes.
Reasoning and rational consideration of things is not easily introduced after about age 7. People brought up in a reactive environment will struggle and rebel against logical analysis, preferring “common sense” or emotion based decision making.
Reactive thinking is often pretty accurate, and people used to reactive thought think that their conclusions are “obvious”, so the idea that they need to also stand up to a first principles analysis undermines a fundamental aspect of their worldview.
If they haven’t been taught to see themselves and their environment in the third person by the time they are in kindergarten, it’s basically too late. It can be fixed, but it won’t likely be in school.