Schools use an array of strategies to match curricula and instruction to students' heterogeneous skills. Although generations of scholars have debated ''tracking'' and its consequences, the literature fails to account for diversity of school-level sorting practices. In this article, we draw on the work of Sørensen and others to articulate and…

The paper explicates the major assumptions of reference-group theory in order to deduce hypotheses with direct application to studies of classroom ability grouping. (Author)

Maintains that ability-group tracking focuses on two issues: (1) whether tracking is more effective in promoting student learning; and (2) whether all students benefit from tracking to the same degree. Concludes that tracking, as currently practiced, tends to be both inequitable and, at least for some students, ineffective. (CFR)

Responds to Maureen Hallinan's review of research and recommendations regarding grouping students for instructional purposes. Contends that ability grouping is much more than an administrative practice. Concludes that the school's normative, social, and political climate should be the object of reform. (CFR)