The Center for Science in the Public Interest (CSPI) developed a case study that provides insights into policy strategy and advocacy best practices that resulted in passage of the Healthy, Hunger-Free Kids Act of 2010 (HHFKA). The case study outlines key lessons to help inform nutrition and public health policy initiatives, as well as continued implementation and defense of school nutrition with a focus on the provisions that address the nutritional quality of school meals, snacks, and beverages and covers the period from 2004 to 2016. CSPI also developed a short summary and infographic to accompany the article, which are available at: https://cspinet.org/schoolfoodcasestudy.