Specifically, the ABA and USN&WR will now force law schools to classify graduates as either employed, going to graduate school, or unemployed. No longer will schools face the temptation to hide bodies in the "graduates who are unemployed and not seeking work" category—a trick that removes students from the denominator of the Emp9 formula and thereby increases the Emp9 score.
Could schools still game the Emp9 measure? I have little doubt that they will try. But they will have to think up new, and more subtle, tricks.
[Update: Paul Caron and Brian Leiter offer additional observations.]
[Crossposted to Agoraphilia.]
Earlier posts about Emp9 measure: