At least some of the proposals go directly against what you are saying. For example, the author (interviewee) points out the practice of adding extra credit fo

At least some of the proposals go directly against what you are saying. For example, the author (interviewee) points out the practice of adding extra credit for conscientiousness, which makes it exactly that students are graded incorrectly compared to their actual knowledge on the subject. In another example, he points out how students who start out doing poorly in a new class but by the end have improved and have absorbed the knowledge will nevertheless get a mediocre final grade because their final grade is an average. In a third example, he points out how homework is often copied or done by others, and so again, grades for homework tend to misrepresent a student's actual knowledge in the class.