If some of your students want to keep a more creative username, or they simply prefer not to be recognisable to the wider Yousician community, you, as a teacher, have the possibility to change the way that student appears in your dashboard to make your life easier.
1. Click on the "Actions" button in the preview of the student you want to edit the display name of.
2. Select "Edit name".
3. Change the display name to one that is easier to identify for you.
4. Press Enter.
Note that this will only change the way the student is displayed in your teacher's dashboard, the actual username and the way the student appears, for example, in the global leaderboards will still be the student's actual username.