Teacher value-added models (VAMs) must isolate teachers' contributions to student achievement to be valid. Well-known VAMs use different specifications, however, leaving policymakers with little clear guidance for constructing a valid model. We examine the sensitivity of teacher value-added estimates under different models based on whether they…

The purpose of this quantitative study was to investigate the effect of prekindergarten attendance on boys' and girls' standardized reading achievement scores in third and fifth grade. The thrust for more emphasis on increased information regarding the impact that prekindergarten has on standardized test results, both short-term and long-term, is…