Discusses research (Tennessee Study of Class Size) that determined the effects of smaller class size in the earliest grades on short- and long-term pupil performance. The 4-year study assessed the performance of over 6,500 students who attended K-3 classrooms having differing numbers of students and found evidence of short- and long-term benefits…

Review of tracking research reveals a small number of well-designed studies with equivocal results. The Tennessee Class Size Study demonstrates convincingly that student achievement is better in smaller K-3 classes and the effect continues later in regular-sized classes. More randomized, controlled field trials such as this are needed. (SK)