Over the last quarter of a century, the educational selectivity of interregional migration has varied somewhat among time periods, age groups, and interregional streams; but there have been a number of persistent tendencies, particularly with respect to migration to and from the South. In general, interregional migration tends to be selective of the better educated. Within age, sex, and color groups, interregional migrants tend to be better educated than nonmigrants at their origin or destination. The net effect of this selectivity upon the educational distribution of the population in the regions has been rather slight, however.