Long time ago when I was a student, some teachers tried what now has fancy name "flipped learning". The usual result was that only few students done the reading and what not before the class. They usually put in only so much effort so that they can get point for participation, but not enough for discussion or workshop to not effectively amount to first encounter with the topic.
That was also my experience with that experiment, as a professor, about a decade ago. Educational ideas always work in the ideal (imagined) environment, but not so well in the (actual) classroom.