The authors examine social-class differences in parents’ child-rearing values for autonomy, self-direction, and conformity and the extent to which their values are influenced by their perceptions of their developing children’s characteristics. Parents from 25 middle-class or working-class families in a Brazilian city participated in interviews, observations, and completed Kohn’s Q-Sort measure when their children were 3, 36, and 72 months of age. Parents’ child-rearing values differed significantly by social class: middle-class parents were more likely to value autonomy and self-direction in their children, whereas working-class parents were more likely to value conformity. In addition, the strength and direction of parental values changed significantly as their children developed. Parents were less likely to value autonomy and self-direction when their children were 36 months than when they were either 3 or 72 months. Middle-class parents were more likely to value conformity when their children were 36 than when they were younger or older.