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 ...

Includes updates and/or revisions. The statistician who pioneered the use of “value added” research techniques for documenting students’ year-to-year academic progress is disputing a critique of his ...

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 ...

EAST LANSING, Mich. -- The controversial new method of evaluating teachers and schools - called "value-added" - does not appear to affect property values, finds research by economists at Michigan ...