There has been ongoing controversy about the reliability of articles on Wikipedia. Still, the Pew Internet Project survey shows that Wikipedia is far more popular among the well-educated than it is among those withlower levels of education. For instance, 50% of those with at least a college degree consultthe site, compared with 22% of those with a high school diploma. And 46% of those age 18 and older who are current full- or part-time students have used Wikipedia, compared with 36% of the overall internet population.
More on Wikipedia’s usage from the Pew Internet & American Life Project