Editorial—New York City on Feb. 24 became the latest municipality to release the “value-added” rankings of thousands of public school teachers, despite opposition from the city’s teachers’ union, which lost a lawsuit to prevent the release of this information. Here’s why the city’s move—and others like it—are seriously misguided.
According to the Associated Press (AP), the rankings track 18,000 math and English public school teachers from fourth through eighth grades over a three-year period from 2007 to 2010. The information connects student achievement to the teachers responsible for their progress, using a controversial statistical method called the “value-added” model. The method aims to measure how much academic growth students have achieved in a given year and attributes this growth, or lack thereof, to the influence of the student’s teacher in that subject.
The United Federation of Teachers fought unsuccessfully to prevent the public release of this information after five media organizations filed Freedom of Information requests for the ratings in 2010, the AP reported. The requests came after the Los Angeles Times published similar information for 6,000 Los Angeles teachers.…Read More