This study provides an understanding of how administrative leaders make decisions regarding enrollment management within academic units at a major research university in the southwestern United States. Key enrollment management functions of recruiting, admissions, marketing, orientation, financial aid/scholarships, academic advising, student engagement, retention and career services were identified from the literature. Typically applied at the institutional level, this study provides an understanding of how leaders in academic units decide to implement enrollment management. A case study was conducted using qualitative data collection methods which emphasized interviews. Senior administrators, such as associate deans within academic units who have responsibility for enrollment management, served as the sample. Three main theoretical constructs were derived after analysis of the data: Theoretical Construct 1: To meet enrollment and retention goals, leaders strategically plan structures and manage resources for enrollment management functions in their academic units. Theoretical Construct 2: To increase retention, leaders intentionally strive to develop a sense of community through customized programs and services for students in their academic units. Theoretical Construct 3: To achieve enrollment objectives within a school-centric model, leaders build relationships with centralized enrollment management functions and other academic units. The discussion and analysis of the study suggests that academic units follow a similar evolutionary model to institutions as they develop enrollment management functions. Five recommendations on how leaders in academic units can more strategically utilize enrollment management principles in decision making are offered. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com/en-US/products/dissertations/individuals.shtml.]