No, there is no curve for any grades. A curve implies that there are a certain percentage of A, B, C, D, and E grades which could quite possibly lower some grades. There are no grade adjustments on individual assignments (unless of course you want me to lower grades when averages on assignments seem high as well as raise them when they seem low). At the end of the semester, I carefully review all student grades to determine if the grading scale is appropriate and if necessary, lower the cutoffs for each letter grade at that time.