BTGuy: The teacher really got nervous because one previous student got points off her AP test in the past by writing Yerushalayim in one of her essays- IN HEBREW!!! Now we keep it strictly English-based.
Actually, I would totally say Merry Christmas if not for the fact that you can’t take it for granted with most people whether they’re Christian, or Muslim, or Hindu, etc. I guess it’s just easier to identify Jews. So a simple Happy Holidays is really the simplest way to go.