In the attempt to develop means for underemployed workers to increase their level of economic success, 684 south Texans (mostly Mexican Americans) were retrained for aircraft assembly and then relocated in the Dallas vicinity. Some 46 relocated workers were interviewed 1 month after their relocation in order to ascertain adjustment patterns resulting from moving to the more dominant American cultural system. Those who remained in the program were interviewed again at 6, 12, and 18 months after relocation. In addition, 6 returnees were interviewed in south Texas. The analysis attempts to show the relation of successful rural-urban migration to achievement as a primary value orientation. Findings suggest that importance of family is significantly related to failure in a relocation program. On the other hand, achievement orientations are slightly more important to stayers than to returnees. Measures of delay of gratification used give only slight support to the achievement model. The authors conclude that the theoretical framework used is valid but that better measures of values are needed for a predictive model. The analysis points to an important use of the value framework in the study of migration. (Author/AL)