"Far from offering expanding attractive career opportunities, it seems that many, but not all, science and engineering careers are headed in the opposite direction: unstable careers, slow-growing wages, and high risk of jobs moving offshore or being filled by temporary workers from abroad."
http://www.theatlantic.com/education/archive/2014/03/the-myt...
I think you can extract potential benefits from any degree which could serve you well in practising the law. Take History for example, where you're taking different interpretations of the past, and concocting arguments in support of a particular interpretation, which is similar to what you will be doing as a general litigator.
It's too easy to game these numbers if law schools give their grads little temporary (not necessarily temp) jobs right out of school and then lay them off soon after, once the statistics stop following those people.
I would think those who have undergrad in some STEM would be doing better than those with no technical background.