Teachers, who otherwise are supportive of the common core, often ask me if I think it is fair that they be evaluated on the basis of test scores from tests they have never seen and on content that they are just starting to teach--often without a lot of supporting materials or professional development.
In fact, that most recently happened on Friday when I was in Franklin, TN.
I always give pretty much the same answer. I don't believe the test-based teacher evaluation schemes are ready for prime time, if it were my choice, we wouldn't make this many big changes at the same time, etc.
Today the New York Times issued an editorial along the same lines that you might find helpful.