Excerpt from the report Highlights: Results of the 1950 and 1960 Censuses are used to compare the school progress of farm and nonfarm children in 1960 and to describe the changes that occurred over the decade. The basis of comparison is the enrollment of children of specific ages in specific grades. For children at each single age between 8 and 17, there is a two-grade span which includes the grades in which most children of a given age are enrolled. These two grades are referred to as the ones “expected" for a given age. Children enrolled in grades below those expected for their age are said to be “retarded" scholastically; those in grades above the expected are said to be "accelerated" scholastically.