Course Hero Acquires CliffsNotes, Quillbot

Course Hero, the information technology company and learning platform, has acquired CliffsNotes, the study guide program, from Houghton Mifflin Harcourt. In addition, it has purchased QuillBot, an AI-powered writing platform used to check for grammar errors, make citations, and improve their writing skills. HMH bough CliffsNotes from John Wiley and Sons in 2012.

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