the top students slightly under-rate themselves, but the bottom students significantly over-rate their abilities, Sounds like what you would expect from the Du

the top students slightly under-rate themselves, but the bottom students significantly over-rate their abilities, Sounds like what you would expect from the Dunning-Kruger effect (http://en.wikipedia.org/wiki/Dunning%E2%80%93Kruger_effect http://en.wikipedia.org/wiki/Dunning%E2%80%93Kruger_effect)