MOOC quizzes: too easy, too hard or Goldilocks?

By Ralph K.M. Haurwitz. In just about any class, the tests are easier for some students than others. So, too, in "Take Your Medicine -- The Impact of Drug Development," a MOOC (massive open online course) I'm taking from the University of Texas.
Online discussions among students make that clear. A student whose handle is ShamJanesky expected higher-level questions: "At the moment, with those questions, I feel as I felt attending biology lessons at high school." More...