Feedback from students is an often overlooked source of actionable ideas. Instructors tend to overlook or underappreciate feedback from their students, but if you attempt to engage the essence of the ideas behind the feedback you receive, you might very well discover some implementable ideas.
Instructors are typically limited to the official feedback collected by the universities for which they're teaching. However, you don't have to limit yourself to that. Why not create your own end or course survey, or launch a survey midway through the course to gauge what is working and what is not?
How you collect feedback will vary based on your course, goals, and students. Just remember to collect both quantitative and qualitative feedback.
Some suggestions for collecting feedback are as follow:
Discussions: The path of least resistance might just be to ask your students for feedback in a special discussion forum. It's not anonymous, so students might be less forthcoming. Also, if the...