Chapter concentrates on Czech secondary school principals. Specifically, within the framework of the research described in the text, the authors were interested in the answer to the question whether the activities performed by the high school principals themselves belong to the roles primarily associated with strategic and conceptual activities, and at the same time, whether the delegated activities are more related to operational and administrative activities. Furthermore, they point to the fact that school management requires an interdisciplinary approach, which, in addition to general managerial knowledge, also uses knowledge from pedagogy, psychology, sociology, legal and economic disciplines, et cetera.