<p>In my grad school days, I TA’d in two different departments at two UC’s. In one department, the professors I worked with never saw any student work; the TA’s evaluated all the papers and also prepared final grades. We were not given any guidelines about grading; as graduate students, we were just supposed to know what good work looked like. In another department, one of the five or six professors I worked for liked to help grade the final exam. But other than that, the professors did not see student work during the term and with that one exception, they didn’t help with exams either. It’s not surprising to me that the feedback students get from TA’s is all over the map.</p>