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Can teachers be evaluated by their students’ test scores? Should they be? |

Kohn: The pretend reformers >>

Corcoran’s recent report on the statistical unreliability of the VAM system in New York City’s push to publicize test scores attached to teachers.

…NYU professor Sean Corcoran uses data analysis to argue that value-added models are not precise enough to be useful for high-stakes decision making or professional development. Go to the original…



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