Wake Forest economics professor Kevin Rask presented his research on correlations between the SAT and college GPA. Can high GPAs be correlated to something other than high SAT scores? About a third can be explained by just a student’s high school academic record. The extra benefit of looking at the SAT is about 5%. Even with grade inflation in high schools, the high school GPA is still a better predictor of success in college than the SAT. What do colleges lose if they drop the SAT: not much, he says.