This article addresses the leadership preparation line of inquiry developed in the past decade by the University Council for Educational Administration/Learning and Teaching in Educational Leadership Special Interest Group Taskforce on Evaluating Leadership Preparation Programs, and it particularly addresses the series of survey instruments developed to pursue this line of inquiry. The article describes these collective instruments, titled "School Leadership Preparation and Practice Survey," and identifies key constructs measured in each instrument as well as uses for each instrument. The article concludes with an explanation of the potential benefits of utilizing a common set of measures to promote research on leadership preparation. (Contains 2 tables and 1 figure.)