Enter your Blackboard course, go to Control Panel > Evaluation > Grade Center.
Click on the Drop-down arrow next to Manage and select Grading Schemas.
Click Create Grading Schema.
Enter Name, Grading Scores, Letter Grades as appropriate, and click the Submit button on the page.
You can click the arrow to insert additional rows.
When you are back on the Grade Center home page, click on the drop-down arrow next to Running Total column and select Edit Column Information.
Select the name of the Grading Schemas you just created from Secondary Display drop-down arrow and click the Submit button on the page.
Now Running Total column will show both the raw scores and the letter grades.