I don't know of A+ averages, but I know people got A averages.
But what I'm surprised no one mentioned, is that these are just simply smarter people. There's no secret they have. They probably work just as hard, or even less, than other students. They just grasp the material better, have higher intellect, can spot issues then analyze more efficiently and quickly then most, and are skilled at writing a law school exam. Its kind of just in them - they just intuitively have better competence.