Or teachers are rewarded by educating students, and don't look at it from a totally mercenary perspective. Which is generally what you want from teachers who i

Or teachers are rewarded by educating students, and don't look at it from a totally mercenary perspective. Which is generally what you want from teachers who ideally can be a students champion, guide, educator all at once, for a short span of time. Once you tell someone their performance is only correlated with income, then they focus on those levers to manage it. And once you have a sufficiently complex role, such an incentive structure ceases to be useful, and ends up killing creativity and open minded ness.