Apple School Manager simplifies the management of student and teacher iPads in education, and enabling a new optional feature called Shared iPad. Shared iPad allows students to sign in and out of an iPad and automatically saves their app data to iCloud. Teacher iPads are also able to launch the Apple Classroom app to monitor and control student iPads to ensure that students stay focused and productive on their iPads at school. Please view Apple's documentation for additional information about preparing your school for Apple School Manager.
Apple Classroom can be configured in two main ways: Shared iPad or 1-to-1 iPad. Shared iPad allows multiple users to log in/out of a single iPad while syncing the user's iCloud content to a Managed Apple ID. Managed Apple IDs are configured with Apple School Manager, and are a requirement for Shared iPad to work. Additionally, you should be sure to confirm that your devices are compatible with Shared iPad's requirements from Apple. 1-to-1 iPad setup would be better if you do not have an account with Apple on school.apple.com, or you know your users will always be keeping the same device with them. Either setup allows teachers to use the Apple Classroom app to control student iPads.
TIP: Use the owner group tags to dynamically change the apps, homescreen layouts, and profiles depending on the user logged into an iPad.
If you don't have access to Apple School Manager (school.apple.com), you can still manually configure the education profile and use the Apple Classroom app to control student iPads. For additional information about how to manually configure the education profile payload, view this video: