Final answer:
Law students are universally trained in using the Westlaw system at law schools, as it is a critical tool for legal research in the profession. The system helps them in finding case law and making persuasive legal arguments, which is central to the practice of law.
Step-by-step explanation:
The question pertains to the training that law students receive in using the Westlaw system at law schools. Westlaw is a widely-used legal research service for lawyers and legal professionals available in over 60 countries. Law schools virtually universally train their students in using this system due to its comprehensive databases of legal information, including case law, legislations, and law journals. This training is critical as legal professionals need to navigate through extensive legal information efficiently and accurately. The legal profession relies on a clear and consistent use of language in order to make persuasive arguments and avoid ambiguity, as legal documents such as briefs are key in persuading the court.