From the comments on a post at Volokh Conspiracy that advises law students that "An Easy Way to Improve Law School Grades" is to take at least one course where the grade is based on a paper and to involve the professor in commenting on an early draft — a strategy one commenter mocks thusly:
Professors love it when students ask for advice.Believe it or not, some of us lawprofs hate brown-nosing. But I almost hate to say that because I'm afraid of scaring off students who resist the advice that you should talk to your professors so that they get to know you — which helps when you need recommendation letters — and because you can have some interesting and enlightening conversations outside of class. I don't want them to think oh, she hates brown-nosing and she's going to think I'm a brown-noser.
"Tell me what to do, oh wise one."
That's the most effective form of brown-nosing.