# Grade History
Every attempt, grade override, manual update or unlocking is logged in the **grade history**. The history includes: the user who modified the grade, the grade before and after updating, and the date/time it was modified or unlocked.
A grade is only locked when an instructor has manually overridden the grade in the gradebook. To unlock a grade, double click it and click the **Reset** button. This will revert the grade to the original score. See :point\_right: [Overriding Grades](/manager/results/gradebook/overriding-grades.md#overriding-a-grade) for more information.
### 1. :point\_up\_2: Select grade
Select the desired grade to view the **Grade Settings** Panel.
### 2. :pencil: Load grade history
Click the **Click to load grade history** button to view the grade history.
### **Viewing an Exam or Lesson Attempt**
Select the desired grade to view the **Grade Settings** Panel. Click the **Click to load grade history** button. Click the **Report** button on the right of the student attempt to view the results of that attempt.
### **Deleting an Exam or Lesson Attempt**
Select the desired grade to view the **Grade Settings** Panel. Click the **Click to load grade history** button. Click the **Delete Attempt** button to delete the attempt. A record will appear in the grade history indicating the exam attempt was deleted.
{% hint style="danger" %}
**Warning**: Once you have deleted an attempt, this action cannot be undone.
{% endhint %}
### Re-Opening Exam Attempts
In some circumstances, submitted exams can be re-opened. The most recent attempt at an exam that has availabe time or attempts remaining and has not passed the exam End Date can be re-opened so that the student may continue to do work on the exam until the available attempts or time has been expired or the End Date passed. To re-open an exam, click the **Re-Open Exam** button on the attempt.
If the user has subsequently begun another attempt but would like to work on a previous attempt, all other attempts must be deleted in order to continue working on that attempt.
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