I completely agree. I also would not consider an r-squared value of 0.47 indicative of strong correlation between two variables. I guess the point is that the

I completely agree. I also would not consider an r-squared value of 0.47 indicative of strong correlation between two variables. I guess the point is that the composite quiz score is more correlated with performance than traditional methods, but I still get the impression that someone is overselling something.