> > Stack rankings and curves aren’t anywhere close to the same.
> Sure they are. The best get a raise/A, the worst get fired/F.
That's actually not at all how stack ranking works. The best might get an A, or a B or a C, and the worst might get a B or a C or a D or an F.
An example: You give a test that is out of 120 points. Here are the scores:
P1 = 100
P2 = 99
P3 = 98
P4 = 97
P5 = 96
Under a curve grading, they all get A's. Under objective grading, they all get B's. With stack ranking:
P1 = A
P2 = B
P3 = C
P4 = D
P5 = F
Should P5 be given an F or get fired? That's what happens in stack ranking.
> Let's put it another way. Do you want the pilot flying you across the Atlantic 747 to be graded on a curve where he happened to be better than some of the other students, or graded against "met the standard / did not meet the standard"?
A pilot is not the same as your undergrad physics class. The pilot was taught by instructor who has to teach in a specific way, often using specific words, developed over many years by a committee of pilots. They then take a test that 100s have taken over many years, written by a committee of pilots.
The pilot instructor has very little leeway on how they teach the class and has no leeway in the test.
Same with medical boards, or any other standardized test.
But your physics professor probably wrote the curriculum themselves, teach it a different way every semester, and use a slightly different test every time.
And as much as you wish it were true, none of your undergrad classes are life or death scenarios.
So yeah, it makes sense to grade on a curve for an undergrad class.