To prove that he is definitely not over-reaching, definitely not telling states what to do, Secretary of Education Arne Duncan is giving states more time to meet his deadlines to tie Common Core test results to teacher evaluation.

He is apparently responding to Randi Weingarten’s request to postpone “high stakes” until teachers have curriculum and professional development.

I hate to be the skunk at the garden party, but I think it is wrong to attach high stakes to testing.

There is very little evidence to support the value of high stakes testing–after all, we have had a dozen years of No Child Left Behind– and plenty of evidence that it is harmful. If it were so great, why aren’t other nations evaluating their teachers by their students’ test scores.

But now states may ask Duncan’s permission to defer the axe. Some members of Congress are beginning to think this is arbitrary and capricious. They don’t remember writing legislation putting the Secretary in charge of every public school in the nation. They don’t remember when they approved national standards and tests.

Duncan doesn’t seem ever to doubt that test scores matter more than anything else. He doesn’t care if value-added modeling narrows the curriculum or mislabels teachers or demoralizes teachers. That’s not his problem.

Remember, he is the guy who reformed the Chicago schools.