If a student joins your class using a class code after you had added them to your class list, this student may now have duplicate profiles. Worry not! You can easily merge these profiles into one.
To merge student profiles, go to your class settings. From there, click on the "students" tab at the top, then click "manage students." Check the boxes for the two student profiles you wish to merge. A blue bar at the bottom of the screen will appear, giving you the option to merge.
When you merge students, you will also merge their assignments and grades into one profile. Click "Merge" to complete this process.