... [مشاهده متن کامل]
So to answer the question: "way to wreck the curve" in that context is a sarcastic way of pointing out that someone has achieved _too much_, because curve grades only apply if the highest score is less than perfect. The implication is that by being too perfect, other people who are less capable are now being held to a higher standard - - more is expected of them. As a saying, it does not have to refer to students in a school but any situation where several people are trying to do the same task and being compared to each other.