This survey of the literature indicates that the problem of class size is not so much one of the type of subject or student, but more often a problem of teaching technique with different sizes of classes. Some authors maintain that class size in itself is not the important factor, but rather it is a factor which masks other more important variables. One set of arguments which does not yet seem to have been considered in the research literature is that class size is a basic working condition for teachers. More sophisticated study of the effects of differences in class size on teachers is required, in addition to studies of these effects on students. (Author/WM)