In the current educational landscape, pressures are ever increasing on educational policy and practice to use research to guide improvement. In recent years, federal programs such as No Child Left Behind, Reading First, and Race to the Top have all provided strong incentives for the use of research in decision-making. Research-practice partnerships are a promising strategy for improving schools and districts. It is often difficult however for researchers and district administrators involved in partnerships to learn from one another. It can also be challenging for those interested in developing new partnerships to learn about different ways they might organize their work or anticipate and address the issues they may face. What is needed is a more robust dialogue in which district leaders, researchers, policymakers, and funders speak candidly about the strategic trade-offs partnerships face and the resources that are required for success. The white paper "Research-Practice Partnerships: A Strategy for Leveraging Research for Educational Improvement in School Districts" (Coburn, C. E., Penuel, W. R., & Geil, K. E. (January 2013) is an important part of moving that conversation forward by: (1) Defining research-practice partnerships; (2) Identifying the major types of partnerships that operate at the district level; and (3) Describing challenges partnerships face, and strategies for addressing these challenges. To do so the authors draw on a review of existing research, and illustrate the work of research-practice partnerships in action. "Case Study II Research Alliance for New York City Schools" is a supplement to the white paper, and details the history, mission, nature of the partnership, challenges encountered in developing strong partnerships, and the benefits realized from the alliance between the Research Alliance for New York City Schools, and the New York City Department of Education. [This case study is a supplement to "Research-Practice Partnerships: A Strategy for Leveraging Research for Educational Improvement in School Districts," ED568396.]