This brief describes the components found in magnet schools that are both racially diverse and educationally effective. It also outlines four evidence-based policy recommendations that can inform federal, state, and local efforts to help design, implement, and sustain effective magnet schools that foster integrated learning and positive student outcomes. These include: (1) Reinstating federal guidance to states and localities about evidence-based approaches to support school diversity; (2) Expanding federal investments in magnet schools and using them to leverage school diversity and student success; (3) Expanding strategic state, regional, and local investments in magnet schools in ways that support school diversity; and (4) Supporting school-level strategies that promote both integration and student success. This brief is based upon and updates an earlier report (ED614373), which can be found online at https://learningpolicyinstitute.org/product/advancing-integration-equity-magnet-schools-report.