Margaret Soltan provokes the latest professorial discussion of modes of address between students and faculty in email. I have taken to aping Frequent Commenter Scott by signing off emails to students with my initials (followed by the standard sig block), although if it’s 3 am and I am dispatching the latest email in a 17-round volley with a student I may slip up and use “Chris” like I would in correspondence with anyone else.
As for how to address students, I uniformly use the first name they have petitioned to go by (some schools like Duke are these days kind enough to include this on class rosters; at others, I have had to learn as I go). Alas, I am nowhere near being old and crusty enough to get away with “Mister” or “Miss” except in the most sarcastic of veins.
Update: Michelle Dion shares her thoughts on the matter.