Should teachers be evaluated based on their students’ test scores. I don’t know but I do know this:
They shouldn’t be evaluated on their students’ test scores unless they are given the freedom to choose how they do their job. If the state and district were focused primarily on enabling teachers, then we could discuss whether test scores are a valid way to measure their performance.
If the state and district are going to dictate how teachers teach, then it is the state and district that needs to be evaluated; not the teachers.
(i.e. If you dictate how they teach, then you should evaluate them on how well they follow those rules; not on the results of following those rules.)