You may have items in your Gradebook that you no longer need. There are a number of ways to remove them.
gradebook
Manually Entering Grades in Moodle’s Gradebook
You can manually enter grades into Moodle’s Gradebook using Grade Items.
(more…)Creating a Simple Gradebook in Moodle
There are many ways to set up your Moodle Gradebook. This tutorial will show you the most basic set up.