In 2013, the U.S. Chamber of Commerce Foundation conducted research to better understand partnerships between corporations and nonprofits. The research, which was conducted through its Corporate Citizenship Center (CCC), looked at a specific set of nonprofit organizations. Each organization works to improve education in Science, Technology, Engineering, and Mathematics (STEM), and all received grants from the Department of Education's Investing in Innovation Fund. The goal of the research was to discover two things: (1) how leading nonprofits effectively partner with corporations, and (2) how nonprofits measure their success and share it with corporate donors. While STEM nonprofits were chosen for this study, the findings in this paper may apply to other types of nonprofit relationships.