As a sign during the course, you'll be asked to review the course, and even though I understand that
everyone is busy and leaving a review seems like a waste of time.
Our greatly appreciate if you could find few spare minutes in your schedule and write a brief course
review just so I understand what you like or dislike about the course and hopefully make my next course
better.
By the way, you don't have to write a paragraph or a novel.
One or two sentences will be greatly appreciated.