Google Classroom: Grades Types of grading systems you can enter into your Classroom Total Points: grades are calculated by dividing the total points a student earns by the total possible points. Weighted using categories: You can assign weighted percentages to categories and the overall grade will be calculated this way. No overall grade Set up a grading system and add grade categories. Grade categories are required with a weighted system, but can also be used to total points or no overall grade.NOTE: you can only select a grading system when you are in the web version of Classroom. Change your grading system by going to your class settings. Scroll to 'Grading' and select the type of overall grade calculation you would like for your class. Add 'Grade categories' by selecting the 'Add grade category' link. You are also able to choose if you would like to show an overall grade to your students here. Grade categories can be added to posts Grade with a rubric Ask for an originality report for assignments or quizzes. Grade and return an assignment back to your students. Grade and return questions to your students.