The relationship between a broad set of personality factors and principals' performance was studied using the Sixteen Personality Factor Questionnaire (16PF). How high and low performing principals actually spent their time on the job was a secondary focus of the study. Subjects were 46 elementary school and 33 secondary school principals (96% were males) from a large metropolitan area in the Midwest. The subjects were divided into four groups of 19 to 20 members each corresponding to four divisions or pods comprising the administrative structure of the school district. In the study of time utilization, four high school principals with average and above average performance ratings were observed using the case study method. Subjects were administered the 16PF, and performance was rated by senior administrators of the school system. Results provide some predictive validity support for the relationship between factors measured by the 16PF and principal performance. The superior principal was more educated, assertive, imaginative, self-sufficient, and warmhearted. The study failed to predict the way in which principals spent their time from either their performance ratings or personality profiles. One table summarizes the multiple regression analysis. (SLD)