The growing awareness of the importance of the first year of high school for future success has prompted schools and districts across the country to develop interventions designed for ninth-graders. "Growth mindset" is an intervention that aims to increase students' desire to take on challenges and to enhance their persistence in school by counteracting the assumption, through the development of specific psychological processes, that academic struggles and setbacks mean that one is "not smart." These psychological processes can result in academic resilience, which in turn can lead to better academic performance of ninth-graders as they make the transition to public high schools. The Mindset Scholars Network invited MDRC to conduct a confirmatory, independent evaluation of the growth mindset intervention using the data collected by the National Study of Learning Mindsets (NSLM) research team. Specifically, MDRC will review the existing data and verify the data processing method. This report discusses the background and data collection of the research done by NSLM during the examination of the growth mindset intervention, and it discusses the work that MDRC will be doing during its evaluation of the NSLM research.