The grade of a paper refers to the type or category
of the paper contents which provide a level of brightness or surface
characteristics used to determine the grade level of the finished
paper stock. Grades are classified from "Premium" at the
highest level to "5" at the lowest level. Some text and
cover stocks are listed simply as A or B grades since fewer grades
of the text and cover stock are produced. A table illustrates
the grade levels of paper according to the degree of brightness.