Minorities have been traditionally underrepresented in scientific fields. For over 10 years, they have been the target of a National Science Foundation (NSF) effort to retain students in science, technology, engineering, and mathematics (STEM)—namely, the Louis Stokes Alliances for Minority Participation (LSAMP) Program. This brief condenses key findings from the Urban Institutes four-year evaluation of LSAMP, focusing on the progression of LSAMP participants through the STEM education pipeline and comparing their outcomes with those of representative samples of minority and nonminority students.