Depends on the student
My favorite teacher in high school was the English teacher I argued with all year. No animosity, just disagreeing on interpretations. The thing I liked was that she actually allowed a student to challenge her in class and deal with the criticism. Got good grades and aced the AP exam. I still think she was wrong, BTW.
We have to fight the terrorists as if there were no rules and preserve our open society as if there were no terrorists. -- [link|http://www.nytimes.com/2001/04/05/opinion/BIO-FRIEDMAN.html|Thomas Friedman]