If you’ve accidentally deleted a student from your roster, you can restore them. Just follow these step-by-step instructions:
Log in using your teacher username and password.
Select the Roster link from the My Classroom or Manage Students menu.
Click the Restore Students tab.
Check the box to the left of the student(s) to restore.
You can also Select All Students at the top of the list.
Click the Restore to My Roster button at the bottom of the page
Each student’s password, assignment, history, stars, and incentives will be restored with the student.
A roster can only contain up to 36 students, so you may need to delete some students before restoring others.