Have you really THOUGHT about what happens when you pay teachers for test scores and teachers fight each other?

What actually happens is not nearly so petty. Schools compete for the best students (Cherry picking) and the teachers use their seniority to fill the teaching positions in the most schools most successful in recruiting. The worst students and least experienced teachers end up dumped together. And the best students producing the highest test scores generate the highest pay for the oldest teachers, not necessarily the best and brightest. ones.