The purpose of this quantitative study was to examine the correlational relationship between school culture factors and the appearance of teacher leadership within the organization. Schien's Organizational Culture Theory and Danielson's Teacher Leadership Theory serve as the framework for this study. Data for the study were collected using the School Culture Triage Survey and the Leadership Practices Inventory. The population consisted of middle school teachers from a school district in Southeast Tennessee. The study found a significant correlation between the school culture characteristics of collaboration, collegiality, and efficacy and the presence of teacher leadership among middle school teachers in the school district. [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.]