What are generally the policies on romantic relationships between university students and professors? It struck me as odd that Jennifer Connelly's character would ask her professor out to dinner. I know that at university both parties would usually be of consensual age, but just as in secondary school, the integrity of the education would seem compromised... Since the characters are based on real people, though, I'm inclined to believe there are probably no restrictions.
If so, what is your opinion on professor/student relationships? Do you think the professor would still be able to grade the student's work without being biased?