Generate new class identities with Profile Manager
If a teacher’s Mac or iPad is lost or stolen, you can generate new class identities for the teacher and students. When you generate new class identities, any devices that had the previous Shared iPad student list and settings are revoked. After you’ve finished, you must push a new profile to the iPad devices. To generate new class identities:
Sign in to Profile Manager and select “Generate new class identities” from the administrator menu, then click Generate.