Despite the American promise of equal educational opportunity for all students, persistent achievement gaps among more and less advantaged groups of students remain, along with the opportunity gaps that create disparate outcomes. However, the recent passage of the Every Student Succeeds Act (ESSA) represents an opportunity for the federal…

To determine whether teachers, on average, improve in their effectiveness as they gain experience in the teaching profession, this brief summarizes the key findings from a critical review of the relevant research. A renewed look at this research is warranted due to advances in research methods and data systems that match student data with…