The purpose of this study was to explore the relationship between superintendent leadership and the operational processes of school improvement. School district superintendents (N = 226) from six southeastern states were surveyed concerning their leadership authenticity and school improvement practices. Descriptive statistics, analyzes of variance, Pearson correlation coefficients, and structure equation modeling were used to analyze the data. A significant and positive relationship was found between superintendent levels of leadership authenticity and their districts' use of best practices in the school improvement process. Implications for practice in academic professional preparation programs, for practicing administrators, and for governing boards are discussed. (Contains 3 tables and 3 figures.)