School Principals play an important role for effective school function and management. Qualitative research design was used to describe the whole phenomenon which was based on the descriptions of the school principals' views and opinions about their selection, capability and current practices. A semi-structured interview schedule was used based on the study's research questions. Data generated from the interview questions concerning professional capability were coded thematically. Findings were discussed under three central and a number of extended themes arising from the research. There were two ways to get the position of principal e.g. merit based selection and seniority based promotion. Some principals showed their concern that seniority based promotion does not ensure that the person selected is competent for the principals' position. They confirm that the world of the principal is uncertain, ambiguous, constantly changing; involving many issues. They further described that collaboration is the key to success and being critical, analytical and creative will make a distinctive school leader. It was also revealed that school principals' burdensome routine effect their mood. Consequently, changing moods and emotions effect their work environment.