My first thought was that it might have something to do with understanding crimes, torts, defenses, etc., by understanding their elements. For example, common law larceny has several elements: (1) trespassory (2) taking and (3) carrying away of (4) the property of another with (5) intent to steal. Or negligence: (1) duty, (2) breach, (3) causation, (4) damages. And so on. This was a big part of our Criminal Law class, so maybe your school teaches it as a foundation for Crim Law, or something.