Does GPA Predict Law Firm Success?

Richard Sander -- no stranger to controversial empirical work -- has an interesting post on the Empirical Legal Studies Blog summarizing evidence that law school GPA correlates with success in large law firms. Specifically, Sander presents evidence that those with higher law school GPAs became partners at large law firms at a significantly higher rate than those with lower GPAs. Writes Sander, "this data shows clearly that GPA matters a lot to one's success and longevity in the world of big firms." I will be interested to see what others have to say about this analysis.