If you need to clear a student’s attempt on a quiz for any reason, you can do this from the Blackboard Grade Center. Go to the Full Grade Center and search for the student and quiz. In the cell where you see the student’s score click on the double drop down area and select “Attempt”. (Example Attempt: 10/13/19 3.00)
Click on the “Attempt” link and you’ll see the quiz and also a section header called “Test Information”.
Expand or click on that yellowish down arrow and you’ll see some test options. One of the options will be “Clear Attempt”. This will wipe the students work and allow the student to retake the quiz.