Jonathan Rees, a history professor at Colorado State University at Pueblo, who has written critically about MOOCs, said their spread is likely to lead to a three-tiered world, with a few high-status “super professors” for whom the courses provide both status and royalties; a larger pool of tenured professors who continue to teach their regular in-person classes until they retire; and “a huge army of adjuncts and teaching assistants,” whose jobs will be vulnerable to online competition.

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