Written for pre- and in-service educators, this "Third Edition" of Craig A. Mertler's "Action Research: Improving Schools and Empowering Educators" introduces the process of conducting one's own classroom- or school-based action research in conjunction with everyday instructional practices and activities. The text provides educators with the knowledge and skills necessary to design research studies, conduct research, and communicate findings to relevant stakeholders and interested parties. The book is divided into 5 parts. They are: (1) What Is Action Research? (2) How Did I Begin My Action Research Study? (3) What Do I Do With All These Data? (4) I've Got Results! Now What? A glossary is included.