The authors review some of the constructs provided by recent classroom language studies. By employing constructs from these studies to describe part of a classroom lesson, the authors illustrate one way to explore how classrooms work. They then list some cautions and recommendations about the use of classroom research for making policy decisions.…

Literature on the relation between class size and student achievement is reviewed, and policy alternatives are suggested. Class size reduction strategies, focusing on individual or small group tutoring, are proposed for primary and secondary instruction. Implementing these strategies requires ambitious staff development programs. (SLD)