Postives:

-Really cares about student's understanding in the coursework.
-Responds to emails promptly.
-Helpful office hours.
-Is a fair teacher.

Negatives:

-Handouts are very unreliable (filled with mistakes and errors all over the place). And what's worse, expects you to study off it.
-Occasionally, if not often, makes mistakes on the board.

She cares a lot about the students and has good sense of humor sometimes; Most of her handouts were given to us with errors; she'd have to correctly it the next session... This makes it hard for the students to know the concept in a clear manner.(especially when she requires the answer in exams to be explained in words) Like some of you have pointed out, she jumps all over the place in lecture and I really don't think the computer sessions helped. All-in-all, study hard by yourself when you have Esfandiari.