This report presents a new framework for designing family engagement initiatives that build capacity among educators and families to partner with one another around student success. Based in existing research and best practices, the "Dual Capacity Building Framework for Family-School Partnerships" is designed to act as a scaffold for the development of family engagement strategies, policies, and programs. The Framework should be seen as a "compass," laying out the goals and conditions necessary to chart a path toward effective family engagement efforts that are linked to student achievement and school improvement. The components of the Framework include: (1) a description of the capacity challenges that must be addressed to support the cultivation of effective home-school partnerships; (2) an articulation of the conditions integral to the success of family-school partnership initiatives and interventions; (3) an identification of the desired intermediate capacity goals that should be the focus of family engagement policies and programs at the federal, state, and local level; and (4) a description of the capacity-building outcomes for school and program staff as well as for families. After outlining these four components, the report presents three case studies that illustrate and further develop the Framework. The case studies feature a school, a district, and a county whose efforts to develop capacity around effective family-school partnerships embody the Dual Capacity-Building Framework.