Value-added models try to separate the contribution of individual teachers or schools to students' learning growth measured by standardized test scores. There is a policy trend to use value-added modeling to evaluate teachers because of its face validity and superficial objectiveness. This article investigates the potential long term consequences…

Value-added models are a class of growth models used in education to assign responsibility for student growth to teachers or schools. For value-added models to be used fairly, sufficient statistical precision is necessary for accurate teacher classification. Previous research indicated precision below practical limits. An alternative approach has…

Reading ability is one of the most crucial skills learned in elementary school, a primary focus for students in these years. Around the third grade, though, students start transitioning to a skill they will need the rest of their academic and work career--reading to learn. Students begin demonstrating their learning by taking high-stakes…