This study utilized a quantitative research approach with a survey design to determine whether a sample of K-8 principals in the state of Illinois, that rated teachers in a set of classroom instructional videos, exhibited inter-rater reliability since they all received the Illinois state-approved training and certification for teacher evaluators.…

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…

"TAP"™: "The System for Teacher and Student Advancement (TAP™)" is an educator effectiveness program that aims to improve student achievement through supports and incentives for teachers. Based on the research, "TAP"™ teachers were found to have no discernible effects on student achievement in science, English…