<p>Nope - the 2/3 and 1/3 thing has nothing to do with admissions. It’s the way that the Ivy League enforces standards for student-athletes. They require that for each sport, the cumulative Academic Index for the team be within a half a standard deviation of that of the general student body. So for non-athletes, the AI is calculated (converting SATs, SAT IIs, and GPAs to a 200-800 scale and adding them together) without any impact on that student’s application. Hernandez just said that she found that the AI correlated pretty highly with admission, but that correlation doesn’t infer causation.</p>