Child development research shows that during the 5 to 7 shift, children make a major transition from early childhood to middle childhood ways of thinking, feeling, and behaving. At the same time, their entry into formal schooling thrusts them into new roles and responsibilities, often in unfamiliar settings with unfamiliar people. These challenges…

Several schools that eschewed the middle school model and remained K-8 discovered anecdotally that their students showed fewer behavioral problems and higher academic achievement than many students enrolled in middle schools. On the basis of studies that verified these observations, school district leaders in Milwaukee, Baltimore, and Philadelphia…