This project aims to develop and test methodology for collecting valid data on sexual assault and other dimensions of campus climate among college students. The study involved surveying approximately 23,000 undergraduate students at nine institutions of higher education through a confidential web-based survey. Using standardized and methodologically rigorous data collection procedures enables meaningful comparisons of victimization rates across schools and, for a given school, over time. This allows for a greater understanding of why some schools have higher rates than others, and what can be done to make campuses safer for all students. As a result of the CCSVS, a valid survey instrument and methodology for measuring sexual assault and campus climate related to sexual assault can now be used on a larger scale to understand and begin to address the issue of campus sexual assault.