Schools and districts routinely recruit, retain, and support highly qualified teachers to ensure that students receive the best learning opportunities. However, even if one's school employs highly qualified full-time teachers, it is important to acknowledge that substitute teachers also have a significant impact on the education of students. One of the responsibilities of the principal is to bring out the best in substitute teachers. With high demands already placed on principals to ensure the quality of teaching staff, there are ways principals can monitor and improve the quality of overall substitute teacher performance. It takes only a short time, but the results of a principal's efforts will likely result in connections and influence that will affect the overall performance of his school, staff, and students. Even in the absence of uniform and extensive training for substitute teachers, principals positively influence the impact of these teachers when they provide consideration, attention, and acknowledgment for the work they do. (Contains 2 online resources.)