Karin Heinrichs holds a professorship in vocational education at the University of Teacher Education in Upper Austria. Since her dissertation she has been working in the field vocational and teacher education focussing on issues of moral judging and acting. After publishing a handbook on moral motivation together with Fritz Oser and Terry Lovat, the researcher focused on motives and values guiding teachers as professionals. One highlight was a small conference on teacher ethos 2016 in Bamberg, that shows the inspiring power of the concept of teacher ethos and motivates to edit this international handbook. In their own research on teacher ethos, Karin Heinrichs and her coauthors focus on a social facet of teacher ethos and on forming appreciative teacher-student-relationships in the classroom as shown in a previous article (Heinrichs & Ziegler, 2018), their contribution in this international handbook as well as in Ziegler´s dissertation that is going to be published in 2021.   Johannes Bauer is full professor of educational research and methodology at the University of Erfurt, Germany. One of his primary research interests is in understanding teacher professionalism, its dimensions, and development across the stages of teachers' professional education and career. Johannes Bauer has published numerous research articles and special issues on these topics in leading scholarly journals, among them Science. The present volume on teacher ethos extends his work on goals, values, attitudes, and beliefs as key aspects of teacher professionalism. Terence Lovat is Emeritus Professor and former Pro Vice-Chancellor, University of Newcastle Australia, Honorary Research Fellow, University of Oxford UK, Honorary Professor, University of Glasgow UK and Adjunct Professor, Royal Roads University Canada. He is a philosopher of education whose main work has centred on curriculum theory and values education and ethics in education. He has a particular interest in religion and specialises in the theology and history of Islam and Islamic Education.  Professor Lovat has many publications on values education and Islam with Springer Nature and edited a handbook on moral motivation with Fritz Oser and Karin Heinrichs with Sense Publishing.