The JPRC is among the national leaders winning school safety research and evaluation awards from the National Institute of Justice (NIJ). Our work includes examining the impact of removing school police from campuses on student safety, behavior, well-being, and disciplinary outcomes. Using a combination of secondary data sources to examine recent school police reforms across California, this rigorous quasi-experimental study will compare school districts that removed school police during 2019/20 or 2020/21 with a matched comparison group of districts that did not remove them. Importantly, the study will include a qualitative case study component to identify the reasons for, and impact of, removing or retaining school police as well as policies and practices implemented as alternatives.