Hi Wayne,
I am sure that the 10% figure is accurate because I know my students want to know the course requirements, expectations, and polices right up front. Once they know them they start to get settled in because they know what they are going to be doing over the next few weeks. With good planning and clear explanations of projects and activities the students will stick with the course. As humans we all like to know what the outcomes are for our efforts. This is using the business model of Return On Investment (ROI) in an educational format.
Gary