Self-efficacy, according to Bandura (1977), is defined as “beliefs in ones capabilities to organize and execute the courses of action required to produce given attainments.” Applying Bandura’s essential theory, this captivating book provides a practitioner-friendly overview of the concepts, vocabulary, practices, and contexts related to teacher self-efficacy. The members of the Association of Teacher Educators’ Commission on Self-Efficacy share their knowledge and expertise written as case studies for readers to become more aware of teacher self-efficacy. Self-Efficacy in Action engages readers in the meaningful discussions of practices and purposes of teacher self-efficacy to advance professionalism. The combination of vignettes, content, discussion questions, and resources guide and support educators and teacher candidates to appreciate the benefits of professional growth and development focused on enhancing self-efficacy for the benefit of student learning and achievement.