I have spent that last 3 months stressing about the true bell curve. Turns out, that's not very good for me...
"The most destructive form of grading by far is that which is done “on a curve,” such that the number of top grades is artificially limited: no matter how well all the students do, not all of them can get an A. Apart from the intrinsic unfairness of this arrangement, its practical effect is to teach students that others are potential obstacles to their own success. The kind of collaboration that can help all students to learn more effectively doesn’t stand a chance in such an environment.
Sadly, even teachers who don’t explicitly grade on a curve may assume, perhaps unconsciously, that the final grades “ought to” come out looking more or less this way: a few very good grades, a few very bad grades, and the majority somewhere in the middle. But as one group of researchers pointed out, "It is not a symbol of rigor to have grades fall into a 'normal' distribution; rather, it is a symbol of failure -- failure to teach well, failure to test well, and failure to have any influence at all on the intellectual lives of students” (Milton et al., 1986, p. 225)."
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