Background: Cluster randomized experiments that assign intact groups such as schools or school districts to treatment conditions are increasingly common in educational research. Such experiments are inherently multilevel designs whose sensitivity (statistical power and precision of estimates) depends on the variance decomposition across levels.…

This case study addresses two major priorities of the Boston Foundation--health and education. Since the 2007 publication of the "Understanding Boston" report "The Boston Paradox: Lots of Health Care, Not Enough Health," the Boston Foundation has worked to draw attention to the epidemic of preventable chronic disease that not…

The Second International Conference on Educational Data Mining (EDM2009) was held at the University of Cordoba, Spain, on July 1-3, 2009. EDM brings together researchers from computer science, education, psychology, psychometrics, and statistics to analyze large data sets to answer educational research questions. The increase in instrumented…