I lived in NYC in the mid-late 90's, and people who were good at teaching math were getting ~$80/hour tutoring kids, and helping them prep for the SAT. If you live in a place that could support it, I imagine you could get a decent rate tutoring kids interested in programming. It's an interesting thought, with parallels to developing a freelancing/ consulting business.

I was never keen on the idea, though. The thought of only helping kids whose parents are rich enough to pay $80/hr felt like I was just widening the already-deep achievement gap. If you have any of this sentiment, you might try to put together a cohort of four kids, and charge each $20/hr.