Martin, End of course evaluations are an excellent way to get students to provide feedback. I always tell my students to tell me at least one thing I can do to make the course better. It's important to get that feedback during the course as well (formative) and not just at the end. The Start, Stop, Continue method is good for such feedback. Two to three weeks into the course simply ask the students: What should I start doing? What should I stop doing? What should I continue doing? You'll be surprised sometimes on what feedback you may get. Thanks for your input.