A new Mathematica study, conducted with the Center on Reinventing Public Education, highlights approaches five successful charter school management organizations (CMOs) use to help improve student achievement. This report expands on a previous report showing that CMOs with the greatest positive impact on student achievement were most likely to establish consistent schoolwide behavior expectations for students, as well as use an intense approach to monitoring and coaching teachers. The latest report offers guidance for schools and districts looking to replicate these promising practices.