This edited book offers diverse perspectives on the professional development of faculty, primarily at K-12 international schools. Contributions consider the many and complex facets of professional development – from administrative factors, assessment and accreditation issues to student needs through a diversity, equity and inclusion lens which acknowledges the differences in their backgrounds and cultures. The first part of the book examines the literature on professional development and presents a quantitative and qualitative study of international school leaders'' views. The second part comprises examples of faculty professional development as testified by scholars who have implemented them in real life. The third part deals with important issues, concepts and applications regarding current faculty professional development such as accreditation, mental health, higher education and cultural identity. The book will appeal to researchers, education faculty and graduate education students.