Grade Columns
Grade columns display grades for the different activities in your course.
You can create columns for:
Overall Grade: Displays the final course grade based on points, weighted items, or a custom formula.
Gradable items: Columns are added automatically for grade items completed online, such as tests and assignments, or you can add columns manually for gradable items completed offline, such as activities that took place outside of class.
Attendance grades: If you use attendance in your grade calculations, the Attendance column displays the student's current attendance grade.
Total Calculation column: Displays a calculated score based on points or weighted items. This is most often used for a Term calculation to provide students with another view of the Overall Grade, where one is in points and the other is percentages.
Calculation column: Displays a calculated score based on a custom formula for a selection of coursework, such as only certain assessments or categories.
About gradebook calculations
A gradebook calculation is a formula that produces a numerical result used to view or assign grades for a course, usually based on other graded items.
You can create 3 types of calculations within a course:
Total Calculation column: For calculating a score based on points or weighted items. This is most often used for a Term calculation to provide students with another view of the Overall Grade, where one is in points and the other is percentages.
Calculation column: For calculating a score based on a custom formula for a selection of coursework, such as only certain assessments or categories.
Overall Grade calculation: For calculating the final course grade based on points, weighted items, or a custom formula.

Note
Each course has one default grading schema used for grades and calculations. The default schema's name and values are defined by the administrator, but you can create new grading schemas or customize existing ones for your course.
Note
Calculations resulting in numbers after the decimal, including repeating numbers, are truncated after the second decimal place. This truncation is used only for display and values are never rounded up. Further calculations use the full number up to 15 decimal places.