The recommended way for setting up Osmo in schools is to have each teacher create their own myOsmo account at https://my.playosmo.com.
From there they'll receive a one time Activation Code, which is only needed the very first time an iPad is connected.
Teachers can then create a profile for each student and track their individual progress. In some cases, we've seen teachers create a single profile for an entire class.
You can create individual player profiles as needed from within any Osmo app on your iPad by tapping the profile icon in the top right hand corner of the app.
Once you have created one profile, you can tap on that profile's icon in the top right corner to get back to the profile creation screen and add more profiles.
We have a video walking you through the setup flow from unboxing to account creation here:https://youtu.be/vVK8R9N-Dh4