Well, isn’t doing well in law school the purpose, being able to do well?
Students who didn’t have the writing skills struggled more when I was in school. One of my friends was an engineer, a good one too. He had had no (and I mean NO) writing classes in college (yes, I know things are different now). In our first year writing class, he had to write almost every paper twice, revising after heavy editing and correction by the TAs. I typed his papers for him and they were really terrible (the grammar, punctuation, sentence structure). Very time consuming to do everything twice (or more).