Whether students of color are more or less likely to be identified as having disabilities than similarly situated students who are White in U.S. states with histories of de jure and de facto racial segregation is currently unknown. Unadjusted analyses of large samples of students attending elementary and middle schools in the U.S. South yielded…

Dyslexia is a neurologically-based, lifelong condition that affects a person's ability to process language, which in turn can make reading and writing more difficult. Between 10 and 20 percent of all people are dyslexic. Providing appropriate reading instruction and intervention for young children by second grade could reduce the percentage of…

Third grade is a critical checkpoint in a child's educational journey. By the end of third grade, children need literacy skills that prepare them for increasing curriculum demands in fourth grade and beyond. Students who are not reading on grade level by this point are significantly more likely to drop out of high school or fail to graduate on…

Randomized experiments are often considered the strongest designs to study the impact of educational interventions. Perhaps the most prevalent class of designs used in large scale education experiments is the cluster randomized design in which entire schools are assigned to treatments. In cluster randomized trials (CRTs) that assign schools to…

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.…

SREB states were among the first in the nation to set comprehensive state academic standards for K-12 schools. Setting these initial standards was only part of the job. Getting these standards right and keeping them right may be the most important task facing public education today. If state standards are too low, many public school graduates will…