Five years ago, Robert E. Lee High School was a big school with big problems. Overcrowding at the 3,100-student school forced some students to use air-conditioning units for chairs. Hallway fights broke out daily. At least half the freshmen disappeared from the roll books before reaching 12th grade. The thing to do, school leaders decided, was to…

This article deals with school districts' K-8 configurations. Cincinnati, Cleveland, Milwaukee, New York, and Philadelphia are among the districts making the change, driven by a small body of research and a rising pile of anecdotes suggesting that K-8 configurations help academic performance, decrease discipline problems, enhance parent…