I think what Arian was saying is that everyone - individuals as well as their peers - benefit from general education. Critical thinking skills and social skills are the top two areas that come to mind for me. If more people were better at these, the entire world would be a better place.
I don't think everyone is fit for college education. Many people go to college today who really don't belong there, and that's because parents and society raise the new generations as though college was the most important thing in life. Not everyone needs to be a biologist or a chemist or an engineer. Those are specialized fields. However, everyone benefits from a basic understanding of philosophy, psychology, history, etc.

