<p>While I'm not sure about this, I think this list simply has to do with 'affiliations', not strictly with bachelor's degrees. For example, somebody who got a master's degree from School X and then went to Yale Law would be counted as being a member of School X. If this is true, then that means that schools that happen to have large graduate programs will tend to be affiliated with more students at YLS than schools that don't have graduate programs at all (like the LAC's). </p>
<p>You also have to factor in the sheer sizes of the various schools. Obviously some schools are bigger than others. Hence you would expect that simply from a numbers standpoint, a bigger school ought to have more students in YLS than a smaller school would. </p>
<p>Then of course there are certain geographic preferences for various students. Lots of people prefer to attend law school near where they live or their families live.</p>