Presents a brief overview of the nine articles which make up this special issue on teacher effectiveness. Asserts that few activities are as crucial in schooling as teaching, and research toward its understanding must continue. (KH)

Argues that teaching is both art and science, but that it is possible to evaluate effectiveness empirically. Discusses common research problems, including the large number of variables that can affect successful teaching; the validity of measurement instruments; and the relevance of research to actual classroom practices. (KH)

Examines measurement and method designs for improving the research on teaching. Outlines four variables for assessing teacher research: presage; context; process; and product. Recommends research that moves beyond the traditional emphasis on teacher behavior to an emphasis on the product of teaching, student outcomes. (KH)

Most research on teaching goes unread by teachers--those who should benefit by knowing, understanding, and integrating ideas, concepts, and conclusions of research. Many teachers have little motivation for reading research, are unable to understand the data, or feel that the research is not relevant to the practice of teaching. (Author/MW)

Compares the effectiveness of public and private schools by analyzing trends in enrollments, organization, and graduation and college entrance. Policymakers need to address the growing public willingness to consider private alternatives in education. (BJV)