Click the Manage button of your desired course and then click the Instructor Tools button of your desired section.
Click the Track tab located on your dashboard and then click the Assessments tab.
Now, to access the history of any assessment, click on the readiness score. This will show a list of all the attempts taken for the assessment item, with details such as: Date and time, detail, items, and performance.
You can reschedule or can re-open and extend the time of an assessment so that the student can continue with his last assessment. To do so, provide the required details and click the Retest button. Your assessment is now reset.
If you want to schedule a new assessment so that the student can start the test from the beginning, click the New Assessment tab and provide the required details and click the Retest button. Your assessment is now rescheduled.