California, which has some 2.8 million students on its public higher education campuses, is taking steps to reduce the gap between students' need for mental health treatment and their use of mental health services. Beginning in 2011, as part of a statewide initiative to improve mental health outcomes for all Californians, the California Mental Health Services Authority (CalMHSA)--a coalition of California county governments--invested in prevention and early intervention (PEI) programs that specifically targeted the mental health and well-being of students in the state's three public higher education systems: the University of California (UC) system, the California State University (CSU) system, and the California Community Colleges (CCC) system. A combination of trainings, social marketing campaigns, and online resources--versus the more traditional approach of increasing the number of mental health screenings and clinicians--was designed to accomplish three main things: help people on campus recognize and support students in need of mental health care, combat the stigma of mental illness, and give students tools for dealing with stress and other personal and emotional problems. This brief summarizes findings from RAND's ongoing evaluation of the CalMHSA higher education PEI initiative, and it discusses the positive influence that improving campus environments and reducing stigma appears to have on college and university students' use of mental health services. [This brief describes work done in RAND Health documented in Lisa Sontag-Padilla, Michelle W. Woodbridge, Joshua Mendelsohn, Elizabeth J. D'Amico, Karen Chan Osilla, Lisa H. Jaycox, Nicole K. Eberhart, Audrey M. Burnam, and Bradley D. Stein, "Factors Affecting Mental Health Service Utilization Among California Public College and University Students," "Psychiatric Services," April 1, 2016, and "Payoffs for California College Students and Taxpayers from Investing in Student Mental Health," by J. Scott Ashwood, Bradley D. Stein, Brian Briscombe, Lisa M. Sontag-Padilla, Michelle W. Woodbridge, Elizabeth May, Rachana Seelam, and M. Audrey Burnam, RR-1370-CMHSA, 2015.]