Earlier quoted context omitted.
Don't forget to bus the kids randomly across town (county? state?), or else your suggestion is ineffective. That has always been a very popular and well received idea (or maybe your should think a bit before blaming teachers).
Why would it be ineffective? Suppose you're a teacher at a school where the kids are all below grade level. Sounds like a much larger opportunity to get those bonuses than a school where all kids are above average. > or maybe your should think a bit before blaming teachers Teachers are only human, and humans respond to positive incentives. The current system has no incentives.
Most teachers can predict each of their student's year-end educational performance by the end of the first parent-teacher meeting week. Students whose parents who are not involved or where there is no culture valuing education at home are pretty much screwed, no matter how much effort is spent on them, and students whose parents are dialed in and taking an active role in their educations are going to succeed regardless of whether the teacher is even there.
Basing a teacher's bonus on student performance will have one effect: Teachers will be incentivized to move to schools or districts with better students.
There are teachers who are better than other teachers, but it's not generally measurable in "student outcomes". Just like there are better programmers than other programmers, but it's not measurable in "company revenue".