Great question! There are a couple ways of doing this:
1) Email - You may email your instructor directly. Her personal email should appear under "Classes" in the website.
2) Parent Teacher Conference - Every fourth or fifth class session, you'll notice that we have "Parent Teacher Conference" listed on your syllabus. This is to let you know that you will have approximately 5 minutes to meet with your instructor so that they can give you first hand information as to how your student is doing.