Here was the distribution of grades for our grammar exam on Monday:

If you scored a 60 or above, you can add 10 points to your grade by completing a grammar review Thursday during lunch. (You must come at the very beginning of the lunch hour.)

If you scored below a 60 and would like to raise your grade up to a 70, you must 1) complete the grammar review during lunch on Thursday and 2) come take a retest during lunch on Friday (come at the very beginning of the lunch period).