Workflow-wise, airdropping larger files can be finicky and slow, especially if students are involved in the process or if the WiFi network is slow.
Alternatively, instructors could use the standard USB sync feature to move sessions on or off the devices to any computer running iTunes. This might be more reliable and could give instructors a greater degree of creative flexibility re: what is backed up vs what students have direct access to.
Edit: my bad, didn’t check post date.