Yes, each student is assigned an iPad in Meraki - I checked under owners and that appears correct (it is showing 1 device owned).
Students and teachers are in the same network.
I am pretty sure this is a networking issue - I have made sure that the iPads are on the same SSID, both have Bluetooth on...
One SSID has NAT - it doesn't look like that would work, so I used on that is in Bridge mode so they have IP addresses that are only different in the last number.
I don't have P2P restricted on my network (that I am aware of).
It may have to do with opening the required ports 3283 and 3284, but I don't know what that will look like or where to do that - my network has a Meraki MX-84 security appliance as a router.