A model for improving school and classroom effectiveness must pay attention to: (1) leadership; (2) school climate; (3) supervision; (4) teacher behaviors; (5) student behaviors; and (6) student achievement. Chapter 1 of this book on effective schools and classrooms introduces these important issues and describes a model incorporating these issues. Chapter 2 reviews research about student and teacher behaviors and how they affect classroom effectiveness. Chapter 3 suggests ways administrators can help teachers promote student involvement, coverage, and success through positive supervision. Research concerning effective schools is the topic of chapter 4, and chapter 5 demonstrates how indicators of effective schools are grouped into the more general categories of school climate and leadership. Chapter 6 uses a hypothetical case study to show how school leadership processes can promote a school climate where there is an academic emphasis, an orderly environment, and expectations for success. The chapter ends with suggestions for superintendents and school boards for improving student achievement. Chapter 7 includes a questionnaire for assessing a school's effectiveness. The eighth chapter discusses principles of the school improvement process. A summary is offered in the ninth chapter, and appendices provide information on monitoring student behavior and the policy statement of a school district on school effectiveness. (JMK)