Traditional predictor variables of SAT scores and high school grades seldom account for more than 16 percent of the variance in student performance in college and graduate school, and they account for even less in decisions of students to leave school. Three studies are presented that added nonintellective variables to the traditional combination and increased the statistical prediction capability. One study involved five graduating classes of a pre-college enrichment program, one considered three graduating classes of a community college medical technology program, and the third involved 625 administrators in 425 colleges and universities. (Author/MSE)