L.A. schools won’t release teachers’ evaluation scores
Blog by Valerie Strauss/Washington Post
The Los Angeles Unified School District is refusing to give the Los Angeles Times the names of thousands of teachers and “value-added” scores that have been calculated from the test scores of their students, the newspaper reported. The district, the second largest in the country, is doing the right thing for the wrong reasons. The Lost Angeles Times in 2010, and then again this year, published a databank showing these scores — which it independently calculated from information it received from the district — that supposedly tell how effective teachers are in educating students. Value-added scores aren’t reliable enough to show effectiveness, assessment experts have repeatedly warned, but that hasn’t stopped a growing number of states from adopting teacher evaluation systems that incorporate these scores. (more...)