In my faculty, all the courses are curved, so it must follow a bell curve under the Business Faculty requirements. 10% of the class fail, 10% get A's.
Since I take mostly business courses, I find most of the professors are more focused on theory and not too much on the application of theories into the real world, when it really should be to prepare us for the working world.
So, how can teachers reduce the chances of poor marks associated with poor teaching/teachers? I think it has to lead back to passion and dedication. Perhaps thats the root case? After 10 years .. 20 years of teaching, I am sure some professors just lose interest from the vary groups of students that pass through their class. If teachers were more passionate and dedicated, they would prepare ahead of time or make some new fun projects.
One thing I am really curious about is if professors need to teach and do research for the University, what do they view as more important?