I'm currently working with a school that have bought 15 new iPads. I was wondering whether all of these could be set up under 1 iCloud account, or whether there was a limit to the number of devices that can be registered. The reason for asking this is the we would like to use Find My iPhone to keep track of the devices within the school, and send messages to any that are misplaced, so we can alert nearby staff to return them to us. We aren't interested in music or movies, as they will primarily be used as learning tools, so any restriction specifically on that content doesn't matter to us. The only thing that would is if there is restrictions on app usage within a single account. For example, if we download an app using the single iCloud account, and had automatic downloads switched on for all 15 iPads, would the app be able to be installed on all of those 15? Sorry if this has been a little long winded, and thanks in advance for your answers.
An account for iCloud does also include log-ins for the iOS App Store / Mac App Store / iTunes Desktop Application , but an iCloud account on any device iOS / Mac / PC does not have to match the App Store / iTunes account which certainly has its account login limitations per device as has been pointed out.
An example of this situation in my personal life (and one I would recommend for persons that have a significant other) is that my wife and I share an iTunes / iOS App Store / Mac App store account. It is my Apple ID / Password used for signing in when making purchases and registering iTunes or the App store on a device.
However, we each utilize a different iCloud account so that we are not getting each other's iMessages (forgot that one in my reply above) Calendar Notices / Reminders / Notes / etc.
Keeping iCloud separate essentially make us our own person, but with iTunes accounts being the same for purchases we are in the same boat for adding iTunes gift cards / charging our cards for purchaes / downloading purchased items already bought before / etc.
I hope that clears up that part up and maybe gives a good recommendation for all as well. I've seen plenty of people become incredibly frustrated not understanding how these two things are actually separate and SHOULD be separated.