2011-Aug-21Students: the Achilles heel of test-based teacher evaluation? - The Answer Sheet - The Washington PostStudents: the Achilles heel of test-based teacher evaluation?By Valerie StraussPaul Hafemann, a 7th/8th Grade social studies teacher at Mahopac Middle School in Mahopac, NY, sent me an email with the following story, or, rather, lesson about standardized tests. It points to a a major, and little discussed, issue about the push to evaluate, pay and retain teachers based on the standardized test scores of their ...