The purpose of the study was to identify the basis of the aspiring principal preparation program (APPP) components Florida school districts provide to their aspiring principals and their relationship, if any, to the state and ISLLC Standards. A total of 50 school districts in Florida participated in this study. The research was guided by the following questions: To what extent do the Florida school districts provide a formal APPP to their current assistant principals? (b) Upon what are the formal APPPs for current assistant principals based: the Florida Principal Competencies (FPCs), the Interstate School Leaders Licensure Consortium (ISLLC) Standards, or another source? (c) To what extent do the school district APPPs in the 67 Florida districts have component requirements that include professional development, mentoring, and a performance-based experience? and (d) Are there differences among the APPP components provided by Florida school districts of various sizes? The findings of...