The research aims to describe primary and secondary education school principals' self-values and to check whether or not those values differ significantly on the basis of gender, seniority, marital status and having or not having children. The participants in the research was composed of school principals working in the primary and secondary education schools of the Ministry of Education which were located in the centre of and the central districts of Canakkale in the 2011 to 2012 academic year. The Rokeach Value Scale of 56-value adjectives was used in this research. In the analysis of the data, statistical techniques such as the arithmetic averages (x-bar), standard deviations, and independent t test were employed for the calculation. According to the findings, the three values that they considered the most important were "being healthy", "national security", and "family security" whereas the ones they considered the least important were "social power", "an exciting life" and "accepting one's share in life". According to the variables of gender, seniority, marital status and having or not having children school principals' self-values differ significantly. (Contains 7 tables.)