This article argues that editing in the era of digital literacies is a complex, collaborative endeavor that requires a sophisticated awareness of audience and purpose and a knowledge of multiple conventions for conveying meaning and ensuring accuracy. It compares group editing of an article about the New York Yankees baseball team on Wikipedia, the popular online encyclopedia, to the decontextualized proofreading task required of seventh graders on a state-level examination. It concludes that literacy instruction in schools needs to prepare students for the multiple dimensions of editing in both print and online environments, which means teaching them to negotiate meanings with others, not merely to correct surface-feature errors. (Contains 1 figure.)