I have witnessed the same thing in our labs where they work in groups. Most of our students believe it's enough to hand in a sheet with stuff written on it even though they have no idea what it means or how to get the answers them selves. Also, We have tried a small verion of this with something called Self Studey. They are assigned chapters and questions are asked about that material during quizes. I would say it's a fair estimate if 1 in 100 actually do the reading.
This stuff sounds great on paper but I have not seen anything from my students that would suggest they will take the initiative on their own to learn anything. Google gives them answers. Whether they understand those answers or not is irrelevant.
