The handbook on school development provides a comprehensive documentation of the current state of school development, based on solid experiences and analyses. It is aimed at professionals in schools and offers practical support that can be immediately implemented in educational practice. With concrete examples, methods, and analysis frameworks, it supports the planning, implementation, and evaluation of school development projects. The contributions come from recognized experts in research and practice who share the belief that schools can evolve when all stakeholders actively take responsibility for their school culture and the quality of teaching. This handbook is an indispensable tool for school leaders, coordinators, consultants, and anyone committed to the advancement of schools and teaching.