The purpose of this study was to conduct an educational needs analysis for school principals in the context of outsourcing training programs. To do this, this study analyzed the existing training content that were delivered for the last two years, 2010-11. Then, the nominal group technique(NGT) was applied to identify the principals' educational needs. Based on these analyses, the survey questionnaire was developed. 1241 principals had been participated in the survey. The findings of this study can be summarized as follows. First, there exists many overlap contents in the existing training programs. Also, contents often do not match the course titles. Therefore, program planning that is fitted to each training objective is needed. Second, program areas that need to be addressed in outsourcing training for school principals include leadership, strategic thinking, program solving, teamwork and organizational development, self leadership and self management, liberal arts and culture, school management and career education. Third, elementary school principals showed more educational needs than secondary school principals. Finally, based upon the findings, some practical implications were discussed.