Scientifically based research used to inform evidence based school reform efforts has been required by the federal government in order to receive grant funding since the reenactment of No Child Left Behind (2002). Educational evaluators are thus faced with the challenge to use rigorous research designs to establish causal relationships. However,…

A study of methods used to ensure validity and reliability in classroom assessments surveyed 625 elementary and secondary teachers in Ohio. Results indicate teachers spent little time conducting statistical analyses of their student evaluation data, and many techniques used were poor and inadequate. Additional professional development and improved…