Contemporary teacher evaluation policies are built upon multiple-measure systems including, primarily, teacher-level value-added and observational estimates. However, researchers have not yet investigated how using these indicators to evaluate teachers might distort validity, especially when one indicator seemingly trumps, or is trusted over the…

Researchers and policymakers in the US and beyond increasingly seek to identify teaching qualities that are associated with academic achievement gains for K-12 students through effectiveness studies. Yet teaching quality varies with academic content and social contexts, involves multiple participants, and requires a range of skills, knowledge, and…

The purpose of this statement is to inform those using or considering the use of value-added models (VAM) about their scientific and technical limitations in the evaluation of educators and programs that prepare teachers. The statement briefly reviews the background and current context of using VAM for evaluations, enumerates specific psychometric…

Recently, student outcomes have bubbled to the top of debates about how to evaluate teaching in community and liberal arts colleges, universities, and professional schools, but even more international attention has been riveted on how outcomes are being used to evaluate teachers and administrators K-12 (Harris, 2012; Rowen & Raudenbush, 2016;…

Passage of the Every Student Succeeds Act (ESSA) in December 2015 signaled a new era for teacher evaluation reform. Under ESSA, states and districts have greater autonomy to design and implement teacher evaluation systems independent of federal influence. This new flexibility brings with it new responsibilities and challenges for states and…

Effective teaching has long been an issue of national concern, but in recent years focus on the effectiveness of programs to produce high-quality teachers has sharpened. Long-standing achievement gaps persist despite large-scale legislative changes at the federal and state levels, and American students continue to show poorer performance on…