This digest deals with within-class reading ability grouping. The digest discusses limitations of grouping; teacher attitudes; student recollections of ability grouping experiences; and grouping for specific purposes (focusing on cooperative learning and its benefits). The digest suggests that good teachers who provide supportive environments for their students and who are aware of the strengths and weaknesses of grouping will make the decisions that are right for themselves, for their classroom situation, and for their students. (RS)