There was a university in New England where the students operated a
"bank" of term papers and other homework assignments.

Papers to suit
all needs and as it would look odd if an undistinguished student
suddenly handed in a brilliant essay, there were papers for an A
grade, B grade and C grade.

A student who had spent the weekend on pursuits other than his
assignment, went to the "bank" and as his course was a standard one,
he took out a paper for a inconspicuous C, retyped it and handed the
work in.

In due course he received it back with the professor's comments,
"I wrote this paper myself twenty years ago. I always thought it
should have had an A, and now I am glad to give it one!"