"It would take a lot to get me back to a conventional form of grading ever again." #wymhm

Her approach -- first announced on her blog -- works based on contracts and "crowdsourcing." First she announced the standards -- students had to do all of the work and attend class to earn an A. If they didn't complete all the assignments, they could get a B or C or worse, based on how many they finished. Students signed a contract to agree to the terms. But students also determined if the assignments (in this case blog posts that were mini-essays on the week's work) were in fact meeting standards. Each week, two students led a discussion in class on the week's readings and ideas -- and those students determined whether or not their fellow students had met the standards.