How to manage grade book in blackboard 9.0?

The Grade Center provides a way for instructors to easily and efficiently communicate and share assessment data directly with their students. A reporting feature can assist instructors to understand student progress and make informed decisions to improve performance

To Access the Grade Center:

1) Turn on Edit Mode

2) Select Grade Center from the Control Panel

3) Select Full Grade Center

• you can Manually Entering Grades in any Grade Center cell in the Grade Center or any Smart View of the Grade Center or from the Grade Detail page.
• Grades can be overridden manually from the Grade Center or from the Grade Details page.  
• Grades can be deleted from the Grade Center. Grades that have been deleted have the override grade and associated comments deleted

In the Grade Center, an instructor can weight grades either by individual items that they select in the grade book or by categories. If you weight your grade book by category, you have the option of dropping the lowest grade in the category; if you weight by item, you do not have this option