With growing evidence that the nation’s cyber charter schools are plagued by serious academic and management problems, Education Week conducted a months-long investigation into what is happening in this niche sector of K-12 schooling. The result is a digital-only, deep-dive account of what’s wrong with cyber charters. Education Week uncovered exclusive data on how rarely students use the learning software at Colorado’s largest cyber charter, the questionable management practices in online charters, and how lobbying in scores of states helps keep the sector growing.