I work for a school district and we use a single Apple ID for our staff to login and manage all our iPads. Is there a way to turn off iMessage and Facetime for this Apple ID remotely without having to go into the settings of each device?
iPad Air 2 Wi-Fi
You have to sign out of Messages/FaceTime on each device unless you are using you are using Apple School Manager. From the article below.
Disable FaceTime and Messages
FaceTime and Messages are off by default; however, another user with the appropriate privileges can enable these features. Depending on your role, you may be able to disable FaceTime and Messages for your institution.
, click Settings at the bottom of the sidebar, then click Accounts 
below Institution Settings.Edit institution settings in Apple School Manager - Apple Support
You have to sign out of Messages/FaceTime on each device unless you are using you are using Apple School Manager. From the article below.
Disable FaceTime and Messages
FaceTime and Messages are off by default; however, another user with the appropriate privileges can enable these features. Depending on your role, you may be able to disable FaceTime and Messages for your institution.
, click Settings at the bottom of the sidebar, then click Accounts below Institution Settings.Edit institution settings in Apple School Manager - Apple Support
Turning off iMessage and Facetime remotely
