> I also don't see where iOS' "Shared iPad" feature lets you log in to any iPad anywhere like a Google Apps account would. You can certainly log into any iPad

> I also don't see where iOS' "Shared iPad" feature lets you log in to any iPad anywhere like a Google Apps account would. You can certainly log into any iPad in the school. Regarding other devices, AFAICT you log into Shared iPad with a 'Managed Apple ID', which you could probably also log into on icloud.com or use natively from personal Apple devices you have, though since macOS and iOS currently only support one iCloud account configured at a time (per user account in the former case) the utility would be limited, as you'd probably also have a personal Apple ID.