ROOTS of STEM is a two-phase project investigating the institutional factors that influence women’s and underrepresented minorities’ decision to pursue STEM majors. The first phase employs quantitative methods and a unique longitudinal dataset, the ROOTS of STEM dataset, following one cohort of North Carolina public school students from middle school to high school and into the public university system in NC. The second phase uses interviews with current UNC-system college seniors to understand their experiences with math and science in middle and high school and in college. Quantitative analyses are ongoing and data collection for Phase II has begun. For a brief over of results, see the executive summary. For more details, see the manuscripts.