I have the same question. How do you dismiss the recent feedback on the dashboard? This would be especially tense if the student has a less-than-wonderful grade that keeps staring them in the face until it gets pushed to the bottom of the list.
I would also like to know the answer to this question. I homeschool, and I give my son feedback on some of his assignments, and all of them are there, and he has to sort through a giant list, that only grows day by day.