There is no reward for dropping out of high school
As I said earlier, I didn't finish high school, and I'm doing just fine.
People thought I was going to be some ghetto reject, because I didn't want to do what everyone else did.
As long as he's doing something positive, there isn't anything wrong with this. Maybe he isn't solely doing it for the money.
The goal of education
should be to develop people that will contribute to the society. As long as he keeps his head, he'll be just fine.
Also, traveling overseas is most likely going to help him more than his last couple years of high school. He'll gain a different perspective of the world that many Americans don't ever get the chance to see.