School leaders and other educational leaders are tasked with promoting the professional competencies of teachers or lecturers, supporting the learning and development processes of students, and creating conditions for an attractive work and learning environment. How do they accomplish this? What enables leaders to achieve positive effects? What hinders development? What personal qualities and competencies are required of them? This volume, "Acting Instead of Blocking - Leadership in Schools and Education," addresses these questions. The structure is based on the following areas of leadership activity: Leadership - creating meaning and fostering innovation; Performance - striving for effectiveness and ensuring performance capability; Management - achieving efficiency and guaranteeing functionality.