This fully updated Fourth Edition of Craig Mertler’s Action Research: Improving Schools and Empowering Educators introduces practicing educators to the process of conducting classroom-based action research. Practical and comprehensive, the book focuses on research methods and procedures that educators can use with their everyday instructional practices, classroom activities, and school procedures. Emphasizing the integration of professional reflection throughout the process and action research as job-embedded professional development, Mertler provides insightful coverage of the knowledge and skills needed to design research studies, conduct research, and communicate findings to relevant stakeholders and interested parties. This Fourth Edition adds coverage of high-interest topics, such as teacher empowerment and evaluation, Google Scholar, mixed-methods research designs, ethics, and more.