This chapter introduces the key questions addressed in the book regarding the role of emotions in educational change, teaching, teacher education, and leadership. It notes that while teacher emotions have increasingly become an important topic, there are relatively few books focused specifically on emotions in education. The book aims to contribute new understandings on how emotions affect teachers' work and lives, the implications for managing educational change and school improvement, and how teacher education can address emotions. It does so through original chapters from international scholars responding to five questions on the central themes and impact of teacher emotions.