The purpose of this study was to determine if there is a relationship between dual enrollment engagement and the completion of a certificate or diploma at a Tennessee College of Applied Technology. Other factors such as demographics of race and age was considered as well. This study is useful in providing further information on the transition from secondary to postsecondary education. Information was gathered to determine the relationship between high school dual enrollment students who attend a Tennessee College of Applied Technology and the likelihood of graduating with a diploma. The participants consist of high school dual enrollment students from each of the 27 Tennessee College of Applied Technology institutions across the state of Tennessee. The findings of this study were that there is a correlation between increased levels of dual enrollment engagement and the completions of a certificate or diploma. [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://bibliotheek.ehb.be:2222/en-US/products/dissertations/individuals.shtml.]