"The racial achievement gap in education is an important social problem to which decades of research have yielded no scalable solutions. Recent evidence from 'No Excuses' charter schools - which demonstrates that some combination of school inputs can educate the poorest minority children -...

"Charter schools were developed, in part, to serve as an R&D engine for traditional public schools, resulting in a wide variety of school strategies and outcomes. In this paper, we collect unparalleled data on the inner-workings of 35 charter schools and correlate these data with credible...