Is there a way to write a specific rule that will drop the lowest grade from an assignment group, but only if the assignment was attempted? I would prefer not to drop any assignment with a 0 as it seems to motivate students to skip the last assignment at the end of the semester knowing that the grade will be dropped.
Follow up: I know that I can leave the assignment blank instead of assigning a 0, but then students seem to think that it I will accept it late..................................