university of wisconsin

New York

City releases Teacher Data Reports — and a slew of caveats

When the Department of Education's embargo of Teacher Data Reports details lifted at noon today, news organizations across the city rushed to make the data available. The Teacher Data Reports are “value-added” assessments of teachers’ effectiveness that were produced from 2008 to 2010 for reading and math teachers in grades 3 to 8. This morning, department officials including Chancellor Dennis Walcott and Chief Academic Officer Shael Polakow-Suransky met with reporters to offer caution about how the data reports should be used. They emphasized the reports' wide margins of error — 35 percentage points for math teachers and 53 percentage points for reading teachers, on average — and that the reports reflect only a small portion of teachers' work. "We would never advise anyone — parent, reporter, principal, teacher — to draw a conclusion based on this score alone," Polakow-Suransky said. Most of the news organizations that filed Freedom of Information Law requests for the ratings plan to publish them in searchable or streamlined databases, with the teachers' names attached. GothamSchools does not plan to publish the data with teachers' names or identifying characteristics included because of concerns about the data's reliability. At least two other news organizations that cover education are also not publishing the data: the local affiliate of Fox News, according to a representative of Fox, and the nonprofit school information website Insideschools. Department officials are asking schools not to release the reports to parents. They issued a guide today advising principals about how to handle parents who demand that their child be removed from the class of a teacher rated ineffective.