Currently, outside forces create blocks that affect the quality and quantity of clinical experiences for pre-licensure nursing students. These limitations create an environment in which entry-level nursing students enter the workforce without a solid foundation in nursing concepts or in exposure to situations that they might encounter. To counter this dilemma, the University of Texas at El Paso (UTEP) School of Nursing Center of Simulation created a simulation activity to allow participants an opportunity to immerse themselves in a simulated hospital environment while practicing skills to be used with future "real" patients. The purpose of this study is to determine the impact of the Simulated Hospital Day (SHD) on pre-licensure nursing students' knowledge and competency regarding specific nursing interventions performed throughout the SHD. In order to obtain this data, two forms of feedback were used throughout the simulation activity. The first was a self-assessment survey completed by the student nurse regarding their level of competency performing selected nursing interventions "before and after" the SHD activity. The second form of feedback was an analysis of knowledge regarding core nursing actions performed on the patient throughout the SHD. The study design was a comparative descriptive design that compared participant pre-test and post-test scores on core knowledge and perceived skill competency. Results showed a significant increase in both core knowledge and perceived skill competency after completing SHD activity. SHD is a simulation activity that can have a major impact on undergraduate nursing education as a creative teaching/learning strategy. Benefits include: 1. providing an alternative hospital experience; and 2. the ability to be tailored to specific events/exposure environments. Outside of academia, the SHD can be used by hospital education departments to: 1. evaluate new nurse graduates; 2. promote continuing education for experienced nurses; and 3. teach new protocols/guidelines. [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.bibliotheek.ehb.be/en-US/products/dissertations/individuals.shtml.]