The invention of Hispanic-serving Institutions (HSIs) in the 1980s was grounded in the theory that institutions enrolling a large concentration of Latino students would adapt their institutional practices to serve these students better. Specifically, critical mass theory suggests once a definable group reaches a certain size within an organization, group interactions transform the organization's culture. While the size of the definable group required for organizational change varies, the enrollment size selected to define HSIs in federal legislation is at least 25 percent Hispanic undergraduate full-time equivalent enrollment. This brief examines Emerging HSIs--institutions that do not yet meet the HSI enrollment threshold of 25 percent, but which are within the critical mass range of 12-24 percent and have the potential to become HSIs in the next few years. The brief integrates national data with data from a web-based survey and four case studies to examine Emerging HSIs' awareness of Latinos as a definable group on their campus, as well as changes in institutional practices to better serve their Latino students. The four Emerging HSIs studied in this brief include: Loyola Marymount University (CA), Palm Beach Community College-Lake Worth (FL), Texas State University-San Marcos (TX), and Metropolitan State College of Denver (CO). The brief summarizes the efforts of these HSIs to adapt institutional practices to serve more Latino students and presents institutional practices and policies suggested by campus leaders and students at Emerging HSIs to serve Latino students. [For "Emerging Hispanic-Serving Institutions (HSIs): Serving Latino Students", see ED508202. This issue brief was developed with the support of the TG Public Benefit Program.]