Remove a domain in Apple School Manager
You can remove a domain from Apple School Manager if you no longer need to use it. If Managed Apple Accounts have been created using the domain, you’re prompted to update the domain of existing accounts as part of the removal process. If the domain is federated, federation must be turned off first. Removing a domain also removes the domain lock.
Remove a domain with no Managed Apple Accounts
Complete this task to remove a domain that has no Managed Apple Accounts associated with it.
In Apple School Manager
, sign in with a user that has the role of Administrator, Site Manager, or People Manager.Select your name at the bottom of the sidebar, select Preferences
, then select Managed Apple Accounts 
.In the Domains section, select Manage next to the domain you want to remove.
Select Remove Domain, then select Remove Domain.
Remove a domain with Managed Apple Accounts
Complete this task to remove a domain that has Managed Apple Accounts associated with it. After you complete this task you must notify affected users they must sign out and sign back in.
In Apple School Manager
, sign in with a user that has the role of Administrator, Site Manager, or People Manager.Select your name at the bottom of the sidebar, select Preferences
, then select Managed Apple Accounts .In the Domains section, select Manage next to the domain you want to remove.
Select Remove Domain, then select Update Domain Name.
Choose a new domain for the users, then select Continue.
You can wait for the activity to complete, view the activity, or select Close to close the window.