If a student has been withdrawn before a term has ended and had some grades entered in a Gradebook, the grades will no longer appear. You can use the Report, Assignment - By Student for All Sections under the Gradebook category to see these grades.
 
  1. Go to Analyze > Reports or select View All in the Reports tile.
  2. Select the Gradebook Category from the Category drop down.
  3. Click Run for Assignment - By Student for All Sections.
  4. Set the Applicable Filters.
  5. Click Generate Report.