The purpose of this study was to investigate the efficacy of online K-12 school leadership preparation programs. Sixty-five graduates of a K-12 school leadership preparation program from a large public university in New York State were included in this study. A survey was used to collect school leadership program graduates' scores on the New York State School Building Leader (SBL) and School District Leader (SDL) licensure assessments as well as their perceptions of their coursework and internship training in the Interstate School Leader Licensure Consortium (ISLLC) Standards. The results of this study showed no statistically significant differences on scores for SBL Part I, SBL Part II and the SDL Part I licensure assessments among the face-to-face and online groups. However, there were statistically significant differences for SDL Part II scores. The mean scores showed the online instructional program graduates scoring higher on the dimensions of Leading District Educational Programs and Managing District Resources and Compliance. There were little to no statistically significant differences found on the coursework preparation for the ISLLC Standards among the face-to-face and online program graduates. On internship preparation, there were statistically significant differences on ISLLC Standard Three: management of the organization, operations, and resources for a safe, efficient learning environment. Here, online graduates perceived better preparedness than face-to-face graduates. The implications of this research suggested that online school leadership preparation programs can be as effective as face-to-face programs.