Educational Leadership Practice and Development from a Constructive-Developmental Theory Perspective Objectives and purposes Demographic changes are altering the population of aspiring and practicing school leaders and changing the populations school leaders are leading. Those changes need to be reflected in understandings of school leadership and school leadership development. Further, as contexts become more complex, a more sophisticated understanding of the requirements of school leadership is required. This paper seeks to respond to those developments by bringing constructive-development theory of the changes during an individual’s lifespan more fully into the educational leadership practice and development arena. It reports research that analysed the theoretical perspective, and the expression of the development stages in leadership practice in educational settings and the way that others experience stage-related practice. Theoretical framework The term ‘constructive-developmental’ describes a theme in psychology that explains the development of meaning-making processes during an individual’s life-span (Kegan 1980). Various tenets underpin constructive-developmental theory (McCauley et al., 2006): the active construction of experience; the shared nature and sequential unfolding and transcending of interpretive schema; the movement from a simple, static and egocentric perspective to a complex, dynamic, and socio/world-centric one that parallels increased understanding, insight and effectiveness; the lack of regression in progression through stages; the impact of environmental complexity on progression; and the constraining effect of each stage on what people are aware of, what they can describe, reflect on, change and do. Various authors have developed constructive-development theories that address the inter-relating aspects of experience, for example Kegan (1994); McCauley et al (2006); and Fischer and Tobert (1995). We use Fischer and Torbert’s stages of Opportunist; Diplomat; Expert; Achiever; Individualist; Strategist; and Magician/Alchemist as they give rich insights and have been relatively widely used. Mode of enquiry, method, and data sources During interviews, 24 senior primary and secondary school leaders in England were asked to characterise school leaders with whom they have or have had close contact; and to describe how they were experienced by others including themselves. From the transcribed data, the dominant leadership stage was identified. Themes from how the school leaders in all the stages were experienced were identified. Results In the paper, we describe the theoretical perspective; the characteristics of the school leaders in each stage; how the stages were experienced by others; and the implications for school leadership practice and development. The analysis indicates that the changes during a school leader’s lifespan enable the development of more appropriate 1 school administration practices and that those in the later stages may have more potential to respond appropriately and to understand the implications of their actions. Overall, we argue that stage-related theories provide helpful perspectives on leadership in schools that both draw on and respond to the changing demography and the nature of our time. The findings contribute to the development of a meta-narrative of ethical, equitable and effective school leadership behaviour. The theoretical perspective is grounded in changes that can occur during an individual’s lifespan. The stages give insights into how school administrators may act when faced with situations of ethical, culture and value conflict. 2