Last August, a Duke professor announced her intention to have her students grade each other (read the original story, with links to the professor’s blog, here: http://www.insidehighered.com/news/2009/08/03/grading).
A year later, the results are in: the students in the experimental class all got As, and the professor reports both the students and the process earned top marks (here’s the follow up story: http://www.insidehighered.com/news/2010/05/03/grading).