My Operating Systems course had a really odd grade curve. There was a listed one in the syllabus, but then the exams were so difficult that nobody was scoring

My Operating Systems course had a really odd grade curve. There was a listed one in the syllabus, but then the exams were so difficult that nobody was scoring above 80-85 out of 100, so there had to be an additional full grade curve after that. So yeah, post-curve isn't helpful. Unless there's some way to normalize the data.