Seems that some T14 law schools have very big year 1 sections (80 or even over 100). Others like Cornell have much smaller sections (like 32).
Surely learning law in a group of 100 is horrible, and very far from what Socrates intended? Is this sufficient reason to select school at least partly on section size?
Lol @ “what Socrates intended.” Other than the misnamed “Socratic method,” law school has nothing in common with Socrates.
Also, the big schools usually break classes into pieces for various components. Plus, people study in study groups, which usually max out at 5 people regardless of class size. I’ve never heard anyone from the bigger schools complain. But if you think that would matter a lot to you, choose accordingly.
You learn lawyer skills on the job, not in law school, so even if large sections lead to less learning, does it really matter?
Some think it’s an advantage…you will be called on less often in those 1L doctrinal black letter law classes 
Class size matters much less than the quality of the professor and your classmates. Some of the best classes I took were in large groups with gifted professors and engaged classmates. In fact, more students meant more points of view and different approaches towards an issue. There were of course also large classes that were duds because the professor was not a very good lecturer, let alone a leader of a Socratic discussion, although he/she might have been a brilliant scholar and writer. The same was true of small sections – some very good ones and some not so good ones. The advantage of going to a top program is the probability of having great professors and classmates is much higher than lesser programs.
Section size is most definitely not a way to select a law school.
Ok, so it was back in the “dark ages,” but Harvard Law School sections were 150+ kids; the “small” section was 75-80 for one doctrinal class. Most doctrinal classes are not “discussion” based in the sense that an undergrad seminar is. The professor leads the class to understand (hopefully) the complexity of the legal issue at hand, and calls on individual students to tease out issues about the cases. Often, the inexperienced student finds they have talked themselves into a corner, logically. It can be terrifying because you are “on show” before 150 very smart peers. Most students then have a study group of a handful of kids they work with every week. Another challenging aspect of law school is that many doctrinal class grades are based only on the grade of the semester-end final exam.