Includes updates and/or revisions. As value-added research designs gain in popularity and undergo increasing scrutiny, experts are beginning to wave cautionary flags about how best to make use of them ...

This is the second in a Times series examining the effectiveness of teachers and schools in the Los Angeles Unified School District using a statistical analysis of students’ California Standards Test ...

I agree with Diane Ravitch’s view that value-added assessment should not be used the sole gauge of teachers’ effectiveness (“The Problems with Value-Added Assessment,” Bridging Differences blog, Oct.

In a dramatic turn for the country’s second-largest school district, Los Angeles Unified released school ratings based on a new approach that measures a school’s success at raising student performance ...