Your course description is a summary statement that informs the student about the subject matter, the approach, breadth and applicability of the course.
It should contain the key words/topics which will be repeated throughout the learning process, e.g. Chemistry, Law, Marketing.
Repetition is an effective learning tool.
Students increasingly use mobile devices, therefore short, to-the-point course descriptions fit this medium perfectly.
This ‘negative’ list has proven a good way to describe what we are attempting to accomplish in a course description.