Following a review of research findings on the relationship between teacher behavior and student achievement, current activities in teacher effectiveness research are discussed. Two major trends emerge in recent research studies. Existing correlational findings on the topic are being integrated and applied to contexts beyond basic skills instruction in the elementary grades. Clusters of correlational findings are being assessed for degree of implementation by teachers in their daily instructional methods. Recent findings indicate that direct instruction in small groups coupled with formal classroom organization and management are as effective in producing satisfactory learning results at the secondary level as they are in teaching basic skills at the elementary level. (JD)