Robert Meyer, the director of the Value-Added Research Center here at the university, also estimates that 50 districts experimenting with pay-for-performance programs also are using the method to ...

She was evaluated under the the D.C. teacher evaluation system, called IMPACT, a so-called "value-added" method of assessing teachers that uses complicated mathematical formulas that purport to ...

Updated August 7, 2013, 5:58 PM The United States Department of Education wants school districts to use "value-added" assessments to judge teacher quality. But this method is problematic.

It also finds evidence that the value-added method couldn’t account for the non-random assignment of students to teachers, a problem researchers like Jesse Rothstein of Berkeley have also ...

Though the value-added method is often used to help educators improve their classroom teaching, it has also been a factor in deciding who receives bonuses, how much they are and even who gets fired.