Trial And Error Is Fine, So Long As You Know The Difference

Matthew DiCarlo:

It's fair to say that improved teacher evaluation is the cornerstone of most current education reform efforts. Although very few people have disagreed on the need to design and implement new evaluation systems, there has been a great deal of disagreement over how best to do so - specifically with regard to the incorporation of test-based measures of teacher productivity (i.e., value-added and other growth model estimates).

The use of these measures has become a polarizing issue. Opponents tend to adamantly object to any degree of incorporation, while many proponents do not consider new evaluations meaningful unless they include test-based measures as a major element (say, at least 40-50 percent). Despite the air of certainty on both sides, this debate has mostly been proceeding based on speculation. The new evaluations are just getting up and running, and there is virtually no evidence as to their effects under actual high-stakes implementation.

Posted by Jim Zellmer at January 19, 2012 1:50 AM
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