I went to a target school. Most reputable TAs and Professors I've met agree grades are mostly a scam. Historical issues with grade inflation or large curve disp

I went to a target school. Most reputable TAs and Professors I've met agree grades are mostly a scam. Historical issues with grade inflation or large curve disparities across semesters because departments force fixed grading distributions, devoid of any context. It makes it harder to design fair exams and homeworks. The only thing grades are good for are improvement indicators - not if you did well with understanding the material of the class you took. Some professors choose students to assist in classes based on how they improved from prerequisites, rather than if they got an A/B/C.