Teacher beliefs play a fundamental role in the education landscape. Nevertheless, most educational researchers only allude to teacher beliefs as part of a study on other subjects. This book fills a necessary gap by identifying the importance of research on teacher beliefs and providing a comprehensive overview of the topic. It provides novices and experts alike a single volume with which to understand a complex research landscape. Including a review of the historical foundations of the field, this book identifies current research trends, and summarizes the current knowledge base regarding teachers' specific beliefs about content, instruction, students, and learning. For its innumerable applications within the field, this handbook is a necessity for anyone interested in educational research.