While information can be found on the Apple web site there are still many questions and answers needed. While attending the NEIT (NYSAIS Education & Information Technology) conference I had the opportunity to sit in on a session and get deeper insights and this is what I found.
iOS 9.3 will provide a shared model for iPads, not a multi-user experience. Students will be able to login to an account, though the manner in which they authenticate has yet to be determined. Your MDM, Apple ID or Active Directory may provide an answer. Students will have fast accost their materials which will be synced to each device via a mechanism possibly tied to Apple’s Caching Server. All of the apps the student will be using must be installed on the device and the amount of space needed per student account (possibly up to 6GB, though this is still a major question) will allow for fast access, but significantly limit the number of students that will be able to share the device along with the actual size of the device used as information will be stored on the local device.
If you are familiar with Casper Focus, Apple will be providing a similar tool in the Classroom app with iOS 9.3. The tool will allow teachers to distribute data, allow for the editing of that data and bring it back to the teacher. Again, the details of which as still unclear, but the it will again integrate with your existing MDM and LMS. This will offload a lot of the management and give teacher more flexibility with their iPads. They will be able to see all of the iPads at once, capture and share that device with all of the other devices.
All of this will be accomplished through the next two pieces: Apple School Manager and Managed Apple IDs.