Members of 101 transracial adoptive families were restudied 10 years after the initial research (Scarr & Weinberg, 1976, 1978). In this article we report on IQ scores and school achievements of the black and interracial children and other adopted children, and the biological offspring of the adoptive families at mid- to late-adolescence. Because of changes in tests and in norms, members of the adoptive families, including parents, scored on average lower at Time 2 follow-up than at Time 1. There were no differences between the transracial adoptees and the biological offspring of the adoptive parents in IQ score change from Time 1 to Time 2. In general, the results support the original findings: Being reared in the culture of the tests and the culture of the schools benefits all children's IQ scores and school achievements.