10/19/2009

Educators nationwide are talking about "value-added" teacher-evaluation systems that measure individual student progress on standardized tests from year to year instead of comparing raw test results to other students and schools. The system -- praised by the Obama administration -- also has been used as a gauge of effective teaching. However, teachers unions have resisted "value-added" evaluation systems, saying that student progress and teacher effectiveness cannot be measured by standardized tests.

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