# Column Properties
## Grade Display Types
Grades in the **Gradebook** can be displayed in the following ways: **Ratio**, **Percent**, **Scale**, and **Points**.
* The **Ratio** display shows the number of points the student earned out of the possible points available.
* The **Percent** display shows grades as a percentage, not a traditional letter grade.
* The **Scale** display shows grades in the traditional letter grade format, such as A, B or C.
* The **Points** display shows grades based on the number of points earned in the assignment.
### 1. :point\_up\_2: Select display type
Click the **Display as** drop-down menu in the **Edit Columns** section and select a display type.
## Grade Calculation Types
Grades can be calculated in a variety of ways for each specific grade column. Lesson, SIMbook, Exam, SIMpath post-test, Project and Calculated gradebook columns can implement a **calculation type**. Custom, Resource, SIMpath pre-test, and SIMpath Lesson columns cannot use a calculation type.
### 1. :point\_up\_2: Select calculation type
Click the **Calculation method** drop-down menu in the **Edit Columns** section and select a calculation method.
There are several **Calculation Types** to choose from when creating a column in the Gradebook: **Average***,* **Maximum***,* **Minimum***,* **First Attempt**, **Last Attempt**, **Sum**, and **Weighted**.
* The **Average** calculation type calculates grades by adding all grades together and dividing by the number of total assignments to find the average.
* The **Maximum** calculation type determines the grade based on the student's highest attempt score for the SimNet assignment.
* The **Minimum** calculation type determines the grade based on the student's lowest attempt score for the SimNet assignment.
* The **Oldest** and **Most Recent** calculation types are specific only to Exam, SIMpath post-test, and Project Columns.
* The **Oldest** calculation type uses the student's initial assignment attempt as the column grade.
* The **Most Recent** calculation type uses the student's most recent assignment attempt as the column grade.
* The **Sum** and **Weighted** calculation types are specific only to Calculated Columns.
* The **Sum** calculation type adds all scores together and determines the student's grade out of the possible number of points.
* The **Weighted** calculation type allows the instructor to give each exam or lesson a specific weight in determining the student's grade.
* The **Pass/Fail** calculation type can be used with Exam, Project, Lesson and SIMbook Columns. The Pass/Fail calculation evaluates the student submission against the Pass/Fail threshold set by the instructor. If the threshold is met, the submission receives full credit for the assignment. If the student does not meet the threshold the student receives no credit for the assignment.
### 2. :dart: Set Max Points
Each assignment has a default number of points available based on the number of questions and their default value. This value may or may not match the needs of your course. You may change the value of your assignment to any whole number. Once you change the value of your assignment you may reset the value to the default by using the **Set to Default** button.
## Setting an Assignment as Extra Credit
When you set an assignment as extra credit, the assignment points will increase a student’s grade if it is completed but will not harm the student’s grade if it is left incomplete.
### 1. :point\_up\_2: Select the assignment
Select the desired assignment in the gradebook.
### 2. :heavy\_check\_mark: Enable extra credit
Click the **Is extra credit?** check box on the Column Settings pane.
### 3. :white\_check\_mark: Apply the change
Click the **Apply** button on the Column Settings pane.
## Change Column Width
All columns in the gradebook can be adjusted as needed by changing their width.
### 1. :keyboard: Type desired width for column.
Select the desired column heading. Type the desired width in the **Width** text box.
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