The California State University (CSU) STEM Collaboratives project is designed to examine the impact of comprehensive integrated support programs on first-year student success in STEM education at CSU institutions. Eight CSU campuses were awarded funding from the Leona M. and Harry B. Helmsley Charitable Trust to test and implement projects incorporating three high-impact educational practices (HIPs): pre-college summer bridge programs, first-year experience courses or programs, and redesigned introductory gateway STEM courses. By integrating several intervention strategies into one comprehensive program and by integrating projects into existing campus programs and resources, the CSU STEM Collaboratives also aims to investigate how to make long-term and sustainable changes to the ways universities support STEM student success. The Pullias Center for Higher Education within the Rossier School of Education at the University of Southern California is working with the CSU and the Helmsley Trust to examine the impact of the project using a mixed-methods study design. To learn more about the project, please see the About section, or visit the project website.