 The remaining 30% of a student's grade is made up of formative assessments or smaller assignments like homework and quizzes. A D- letter grade is also being introduced, and the grading scale will shift slightly for grades D through F. The school system says the goal was to increase consistency and clarity in grading policies. Acacia James, WTOP News. Animated films are helping the box office bounce back. We get more from CBS's Monica Ricks.