Earlier quoted context omitted.
It's interesting to consider that many of these lower paying jobs - such as teachers/caregivers are very hard to tie performance to profits. Therefore the market forces are different or nonexistent, who hires a $500,000/year rock star grade school teacher? Even if such a thing exists and has real impact.
I'd have thought that would be easier to do for teachers than for (the implicit comparison) software engineers.
But the market is clearly there - plenty of people here pay $25-$30k/year for private school. With a small class size of 10-15 students that's $250k-$450k/year.
On top of that most people here pay maybe $10-$15k to schools via property tax. So that's another $100k-$150k.