Differential prediction of grade point average for black and white freshman students was empirically investigated at 13 integrated institutions by comparison of regression planes. Particular attention was given to the possibility that prediction procedures that are appropriate for white (majority) students would under-predict the performance of black (minority) students. The data tend to support, among others, the following generalizations: (1) a single regression plane cannot be used to predict freshman GPA for both blacks and whites in many of the institutions studied; (2) nevertheless, if prediction of GPA from SAT scores is based upon prediction equations suitable for majority students, then black students, as a group, are predicted to do about as well as (or better than) they actually do. Analysis demonstrated that a general conclusion applicable to all institutions is not justified. Admissions officers are urged to consider and conduct institutional self-studies routinely on the question of differential predictive validity. (Author/LR)