This study re-envisions the Nation's Report Card from a "whole child" perspective that considers not just students' academic achievement, but also their physical and mental health. Jaekyung Lee's integrated analysis of the National Assessment of Educational Progress and the National Survey of Children's Health datasets reveals that many…

Through a synthesis of test publisher norms and national longitudinal data sets, this study provides new national norms of academic growth in K-12 reading and math to help reinterpret conventional effect sizes in time units. We propose "d'," a time-indexed-effect-size metric to estimate how long it would take for an "untreated"…

This study challenges prior evidence on the impact of Korea's high-stakes school accountability policy as a tool to improve overall achievement and close achievement gaps. Applying difference-in-differences method, the study compares Korean high school students' reading and math test score trends before and after the policy based on the National…

This study examines the trends of the U.S. states' reading and math proficiency standards before and after the adoption of the Common Core State Standards (CCSS) and explores their impact on school practices and student achievement. Drawing on the 2003-15 National Assessment of Educational Progress (NAEP) grades 4 and 8 assessment and survey…