And you keep on ignoring that the tests should NOT be created by the teachers,...and kept secret until test day,...problem solved.
FAST
That doesn't solve the problem. Teaching the test doesn't mean teaching the exact questions, but shifting the focus of teaching to memorization and test strategy, drilling students with sample tests similar to the final test, etc. These things lead to a superficial understanding, a sort of rote learning.
It would be better if teachers instead helped students develop their analytical thinking, discuss the issues target then memorize dates and talking points. A more comprehensive and in with depth learning experience.
I agree with finding objective ways to measure teacher performance and linking their pay to those metrics but I think we have to do better then just rely in standardized test scores.
One creative way to do that would be to use NEXT YEAR's standardized scores. In other words, evaluate a grade 9 teacher based on their students grade 10 test score a year later. That would incent the teachers to prioritize giving kids a solid foundation for their next year of school.

