Integral to "value-added" is a requirement that some score low | GothamSchools - 0 views
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Jeff Bernstein on 08 Mar 12The long-term goal of many education reformers is to create a teaching force in which nearly all teachers are high-performing. However, in New York City's rankings - which rated thousands of teachers who taught in the system from 2007 to 2010 - teachers were graded on a curve. That is, under the city's formula, some teachers would always be rated as "below average," even if student performance increased significantly in all classrooms across the city.