Previous studies about ELs have reported data on active English Learners--defined as those students who have not yet reached proficiency on a state English test--at a specific moment in time. This study, for the first time, analyzed the long-term trajectories of 18,000 CPS students who began kindergarten as ELs and followed their progress all the…

President Obama and others have demonstrated considerable interest in the Tulsa school-based pre-K program, one of a handful of universal pre-K programs in the U.S. The short-term effects of high-quality pre-K on school readiness are now well-established. At the same time, questions have been raised as to whether these effects persist over time.…