Apple sending out iOS 9.3 beta 1 to public beta testers via an OTA update
Another new feature coming in iOS 9.3 allows multiple students in different classes to each use the same Apple iPad. Using multiple accounts, None of the students will have to worry about the others seeing their personal information. The update is in the process of being sent to public iOS beta testers via an OTA update.
If you're interested in becoming a public iOS beta tester, click on the sourcelink. Once you sign up, you will be able to get new features on your iPhone or iPad before the majority of the public has a chance to use them. While not the final build, and thus open to bugs, lags and gremlins, there are usually a few new features that you should enjoy testing. In addition, Apple gets to see your feedback about the iOS beta you're testing via a feedback app that all public iOS beta testers get to use.
source: Apple via 9to5Mac, MacRumors