Feb
24
2012

NYT Sues for Right to Publish Bad Teacher Data

The New York Times, along with a few other media outlets, went to court to win the right to publish Teacher Data Reports–the "value-added" ratings for some 18,000 New York City public schoolteachers. The Times explains today–accurately–that the numbers are seriously flawed: Even before their release, the ratings have been assailed by independent experts, school administrators and teachers who say there are large margins of error–because they are based on small amounts of data, the test scores themselves were determined by the state to have been inflated, and there were factual errors or omissions, among other problems. So why publish […]

Feb
08
2011

LAT Invents Support for LAT Series on Teacher Testing

The L.A. Times' controversial investigation last year that rated Los Angeles schoolteachers' effectiveness based on a value-addedresearch methodhasfaced a storm of criticism. (See Wayne Au's recent Rethinking Schools piece.) Now the National Education Policy Center has weighed in, finding that the research "was demonstrably inadequate to support the published rankings." The NEPC was covered in the Washington Post and, wouldn't you know it, the Los Angeles Times. Below are the headlines. Go ahead and guess which one is which. Researchers Fault L.A. Times Methods in Analysis of California Teachers Separate Study Confirms Many Los Angeles Times Findings on Teacher Effectiveness