Excerpt from "Putting law school grades in perspective" M.I. Swygert: "the simple fact is that people come to law school with different cognitive abilities and study skills. Grades in part
reflect these differences Thus, there is no universally applicable relation between time spent in studying and the final grade."
Some people will naturally have the skills necessary to excel in law school. Some people will simply be predisposed to thinking in a way that law school professors will like. For a more intelligent discussion of this topic refer to the article http://dennistonsing.com/Stetson%20Grades%20Article.pdf