This paper provides the first population-based evidence on how much standardized test scores vary among public school districts within each state and how segregation explains that variation. Using estimates based on roughly 300 million test score records in math and English Language Arts (ELA) for Grades 3 through 8 from every U.S. public school…

In this study, we analyzed data for the Illinois high school class of 2003 to determine the impact of dual credit participation on postsecondary attainment. We matched 8,095 dual credit participants to an equal number of nonparticipants within the same high school at the point of postsecondary enrollment using propensity scores calculated through…

What is "teaching to the test," and can one detect evidence of this practice in state test scores? This paper unpacks this concept and empirically investigates one variant of it by analyzing test item--level data from three states' mathematics and reading tests. We show that NCLB-era state tests predictably emphasized some state…