And when the wealthy districts are saturated, but there is still a strong positive return to education in poorer districts, where then does the next great-but-mercenary teacher go?
Your scenario only plays out if there is always a higher marginal return to teaching among the already-advantaged. Sorry, but lots of advantaged people are dumb and lazy, and even among those who aren't, there is a point of diminishing economic returns to their education.
Yes, the talented wealthy will be well-served under a 'human capital' system. But then teaching resources will find upside potential wherever it exists, including those areas with disastrously bad public schools today.
Your scenario only plays out if there is always a higher marginal return to teaching among the already-advantaged. Sorry, but lots of advantaged people are dumb and lazy, and even among those who aren't, there is a point of diminishing economic returns to their education.
Yes, the talented wealthy will be well-served under a 'human capital' system. But then teaching resources will find upside potential wherever it exists, including those areas with disastrously bad public schools today.