In their study, Xu and Jaggars found that distance learners are not only less likely to do as well as students in traditional classroom settings, but are also less likely to earn a college degree.
research and consulting service that assists organizations in transitioning to digital environments. In May 2012 the company reported multiple concerns about distance learning
Link to study by Ithaca S & R (funded by Gates Foundation) regarding barriers to online learning. PDF with highlights saved to "Online Learning" file in documents.