To grade an assignment, quiz, or discussion using a Rubric you've already created, open up the Rubric within an Assignment, click on Edit, and check the box that says Use this rubric for assignment grading. You can also check the box next to "I'll write free-form comments when assessing students" if you wish to provide comments within the Rubric to students. Then select Update Rubric.

When you are ready to grade the assignment, open up SpeedGrader.

Open SpeedGrader

Click on View Rubric.

View Rubric

Select the appropriate ratings for each criteria by clicking on the criterion box and then hit Save.

Grade Work Using Rubrics

Make sure that the Rubric grade matches the Assignment grade within SpeedGrader, then move on to the next student and grade their assignment using the Rubric as you had done previously.

View Assignment for Next Student

Guide

How do I use a Rubric to grade an assignment?