Here are some more resources for editing workshops and editathons: 

https://meta.wikimedia.org/wiki/Grants:Evaluation/Program_resources/Edit-a-thons
https://en.wikipedia.org/wiki/Wikipedia:Training/For_students
https://en.wikipedia.org/wiki/Wikipedia:Meetup/ArtAndFeminism/TrainingLessonPlan
http://vimeo.com/64973792
http://www.hastac.org/blogs/wadewitz/2013/04/30/learning-work-wikipedia-new-pages-patrol-and-how-create-new-wikipedia-arti

Thanks for sharing, Alex