I find this resource helpful for the written instruction as well as the ability to search for particular subjects. For example, I wanted to know what the "eye" symbol meant when I was setting up the student enrollment. Going to this pdf and typing "control f" and typing in "eye" took me to the section quickly and easily.
I think feedback is important in any course, but it is even more important when the course is online. Without face-to-face contact, it is difficult to know if I am meeting the criteria of an assignment. It is also less convenient to ask my classmates about their work. The feedback helps me to know if I'm on the right track!
Understands and uses data from assessments to guide instruction
Yes! I think the purpose of assessments is to show what your students have learned. If many of them have difficulty, the teacher should take the time to reteach the lesson, ideally in a different format to reach different learning styles. If many students don't understand the lesson, the teacher hasn't taught it properly for that particular group. Maybe she used techniques that have worked well for other groups, but the assessment tells you if that particular group understands what you are attempting to teach; if they don't understand the lesson, you haven't truly "taught" it.