In the Gradebook, click on the Setup tab, then Gradebook setup
For the item you wish to hide, select the Edit drop-down menu on the right (under the Actions column) and then click the Hide link. This closes the eye and greys out the item
To show a hidden assignment, repeat steps 2 and 3. There will be one slight difference: the Hide option will be replaced with a Show option.
Show numerical marks as letter grades
In the Gradebook, click on the Setup tab, then the Gradebook setup link
For the item you wish to change, click the Edit link to the right of the assignment and select Edit settings
Click the Show more… link to see advanced settings
Change Grade display type to Letter
To show the mark again, change the Grade display type to Real.
Click the Save changes button
Set a passing mark/grade
When a passing grade is set, marks in the Gradebook are coloured to distinguish pass or fail. Any mark at or above the passing grade is coloured green, while any mark below the passing grade is coloured red.