Collecting Photos From Ipads

In the school I work in, the staff use their ipads to take pictures of everything. They are all supervised and enroled in an MDM. At the moment I go to each ipad to collect photos and upload them to our sharepoint by connecting via USB. We cant use Icloud as a solution as the school can not afford it, we all have office 365 with 1TB of Onedrive but the solution needs to be completely autonomous with little or no input from staff, as they either forget to transfer files to Sharepoint or dont have the time.

My question is - Is there any way to collect photos from ipads and deposit them in a central location, either via an app or through native apps.

The ipads in question are ipad minis