This article is condensed from the topical kit, "NEA Focus: Class Size--A Critical Factor in Quality Education." It cites research on the effects of class size on classroom environment, pupil attitudes, and teacher morale. It also discusses the politics of class size and the advantages of small classes. (SJL)

Research indicates that the relationship between class size and instructional effectiveness depends on a multitude of related variables, such as age level of students, subject matter taught, and instructional methods used. Recent statistical syntheses of this research reveal that the instructional benefits of smaller classes are most significant…