“High school grade point average (GPA) is a strong predictor of future earnings, a study concludes. The findings show that a one-point increase in high school GPA raises annual earnings in adulthood by around 12 percent for men and 14 percent for women. Although previous studies have found a relationship between higher levels of education and greater earnings, less is known about the association between academic performance in high school and income.”
How about time management? Memory retention and retrieval? Not procrastinating?