> You may have gotten a C in Math 55 but your potential employer could see the average grade was a B+.
This never happens. No one cares if you were a C student at Harvard or an A student. All they care about is the degree. With one exception: grad school. Bad grades can shut off doors for more education.
From he point of view of people who give grades:
1. High grades are free, low grades are expensive.
I can mint as many As as I want. No one will ever complain.
Give a student a B or a C? I have had students flip. Their parents can call. They can appeal. Some people just cause endless problems.
2. I don't need people posting hate about me online
When you give students good grades they say great things about you on ratemyprofessor and on surveys. When you give bad grades.. they say bad things. No thanks.
This has even resulted in lecturers losing their jobs.
3. Cheating distorts grades anyway
Can you imagine the disaster when you catch most of a class cheating? In my experience a significant fraction of students cheat. Guess how many hours of your life you will waste if you pursue every clear cheater?
With that in mind, if you grade on a curve and set a low average grade, you're just punishing the honest stuents.
4. Who cares!?
So what if everyone gets an A? What's the point? Given that no employer cares and that your wealth is largely a function of your parent's wealth, why are we wasting so much time on this. Any reasonable effort should merit an A and then we leave people alone. Students who want to excel will go on to do research, side projects, etc. regardless.