Examined the class formation procedures used in 22 elementary schools from two districts and the influence these procedures had on the composition of 200 classes, 56 of which were combination classes of students from two grade levels. Principals tended to assign higher ability and more independent students to combination classes to ease teacher…

Queried 571 elementary school principals in 12 states to determine: (1) the frequency of nontraditional (combination and nongraded) classes; and (2) changes in the use of combination classes during recent years. Found that although combination classes represented 17% of California classrooms, most states contained only 3 to 7%. Nongraded classes…

Examined the class distributional properties of 200 elementary school classes in 2 school districts. Fifty-six classes were combination classes of students from 2 grades. Principals and teachers tended to assign higher ability and more independent students to such classes, and these assignments affected the class distributional properties.…

A whole-class model providing for student diversity through remediation and enrichment in small groups was compared with a two-group model accommodating diversity through fixed within-class ability groups. Higher mathematics achievement was found for the whole-class model in a study of 1,736 fourth, fifth, and sixth graders. (SLD)