While searching for study abroad information in law school (I'm a 1L), I saw this topic. Do not listen to what these posters have said! I guess this stems from the fact that most people on this forum have never been to law school.
While in undergrad, I participated in a study abroad program for a semester. My school told me that the grades would not be reflected in my gpa, and would only serve to give me credit for that semester. While this was true, LSDAS FACTORS IN YOUR STUDY ABROAD GRADES INTO YOUR GPA! In other words, after you start sending out your law school applications, you will be able to see the LSDAS report that is sent to every law school you apply to. In this report, there is something called "overall gpa" or something to that effect. In this statistic, they convert your grades received abroad into an American style gpa format.
I learned this the hard way. I figured my grades didn't mean anything abroad, and treated each class like it was pass/fail. In addition, I studied in Australia, where there is much less grade inflation then there is here, and they don't even use our grading system. Their grades are HD,D,C,P,F. You cannot really convert this into A,B,C,D,E. Unfortunately, my overall gpa reflected some weird conversion of the grades from that semester and was lowered around .15.
It all worked out, as I got into a T25 school, but know that LSDAS WILL take your grades earned abroad and factor them into your gpa. Be warned.