Attended a good workshop yesterday on Apple deployment in schools (6/5/2014).
It seems that Apple are doing a good job making it easy for schools to manage apps, on Ipads and other devices. Allow easy payment in buik, once bought you can deploy to an ipad, then remove if that ipad user no longer needs that app, store and use else where
As an example a KS1 app will be deleted when a child moves to KS2 , freeing up that app to be used with another KS1 child on another IPAD.
Pretty good stuff.