In this chapter, the authors describe the specific research skills to be developed for prospective principals in preparation for effective data use for school improvement. Relevant background information is provided regarding effective data use leadership, definition of data literacy, standards for principal preparation in data use, research on teaching research methods, and a comparison of the research process and the data-informed decision-making (DIDM) process. These skills are organized and reported in the chapter by steps in the DIDM research process. These steps include goal setting/problem formation, using previous research, planning for data collection, obtaining or collecting data, analyzing data (transforming data into information), and interpreting/taking action/making decisions.