Student access to courses is removed two weeks after the end of a semester. During this process all grade book records are deleted. You should download your gradebook to your local computer after you submit your final grades.
Follow these steps to do it.
In order to download (export) the gradebook for a course, you should goto the [Control Panel] for that course and click on the [Grade Center] link to expand it. Click on [Full Grade Center]. Once you are inside the Grade Center you should move your mouse over the [Work Offline] button on the menu bar and then click on the [Download] link. Under [Data] section, select the [Full Grade Center] option, under the [Options] section, select [Tab] as the delimiter type and [Yes] to include hidden information. In the [Save Location] section, choose [My Computer] and then click on the [Submit] button at the bottom of the page. On the next page click on the [Download] button. You should get a dialog box with a request to save the file. Save the file to a location where you can find it later. The file you saved can be opened with Microsoft Excel.