Click ‘Settings’ at the top.

Click ‘MANAGE’ in the Manage students box.

At the bottom of your list of classes there is a folder called ‘Students no longer in my school’ – click the triangle to show the list of students who have been removed.

If you need to choose more than one student, then click ‘Select multiple’ under one of the main classes.

Click on the removed student and drag them back into their class.

Click ‘Done’.