The increase in reported levels of stress and burnout in teachers across Europe highlights the importance of teachers' social and emotional competencies and diversity awareness (SEDA). The innovative conceptual overlap of social and emotional competencies and diversity awareness is experimentally tested across European countries. The book is our way of experimentally demonstrating how teachers' SEDA can be supported across Europe (Volume I) and how policy can support these processes (Volume II). Volume II provides insights into how the development of teachers’ SEDA competencies currently is and could be better supported at the European Union and national policy levels in the future.