Ohio had the misfortune of winning Race to the Top funding, which means that teachers must be evaluated by the test scores of their students, in part.
In Ohio, it is in large part, because test scores will count for 50% of their evaluation. That is as bad as it gets but typical for rightwing states that want to harass teachers.
A reader sent me an interesting story from Toledo in which everyone shows that they are trying to comply but uncertain about how to do it and how it will work.
The refreshing part of the story is that the reporter is skeptical. The reporter raises lots of questions and is aware that this is an unproven idea.
I wrote earlier that value-added assessment is junk science. It has never worked anywhere. It is untried and unproven. The National Academy of Education and AERA say it will measure what kinds of students a teacher has in her or his classroom, not teacher quality.
VAM is bunk science and Race to the Top is imposing it nationally without any evidence that it will do anything other than encourage teaching to the test, fear, and cheating.