1. Professors raise bar sometimes which students find difficult to cope with and result in low feedback
2. Some students try to "hit" professors with low grades since they are not interested in them
3. More work by professors means low grades from students
This is what usually happens in India and I am a professor
1. Part of raising the bar should be making sure students understand that you are doing it and are into it. Also by saying "raising the bar" you are implying that they are going above what the rest of the university is doing. Which is an indictment of the university not of the students. 2. Why aren't they interested in them? Could it be because they are not good? 3. So professors should be able to assign any amount of work that they deem fit? If its a 2-credit course with the workload of a 4-credit course then the professor is bad. If its a 4-credit class and other 4-credit classes have significantly less work, then the university is screwing up. If the its a 4-credit course with a lot more work than other 4-credit courses then that should probably be clearly conveyed up front or have some mechanism for conveying that.