Advice for college students.

Probably good for law students too.

Here's "Don't Alienate Your Professor," by Carol Berkin:

During class, do not: a) beat out a cadence on your desk while the teacher is lecturing; b) sigh audibly more than three or four times during a class period; c) check your watch more than twice during the hour. Do: a) practice a look of genuine interest in the lecture or discussion; b) nod in agreement frequently; c) laugh at all (or at least most) of the professor’s jokes.