I believe that since once you receive your grades in college, no one needs to know about it other than you and your professor. Her parents eventually stopped asking her about her grades because, as Crucet previously stated, they no longer had context and her parents wouldn't understand (Crucet 4/5). I think he's saying that regardless of the grades you get, the work you put into your homework has a broader context than simply telling your parents the specific grade you receive. I think she came to the conclusion that this new, fresh college experience was her experience and that she didn't have to tell anyone, not even classmates, what her grades were. This was also new to me, because in the past I always told my parents my grades and my fellow peers what my grades were. We always discussed our grades, because it was part of education to discuss one's achievements as students. As we transition into our first year of college, as Crucet made clear, you don't have to say anything to anyone.