What are Compliance Policies? What does it mean if an iPad is Not Compliant?

Most schools do not use them, but you could use them if you want to. You could optionally create a policy which says "All iPads must be at iOS version 13.0 or higher". Then as you look in the Device List, you could easily see which devices were Not Compliant. You could create multiple policies on any number of possible configuration, device, or user parameters.

If you would like to learn more about using them, either send an email to desales-grant-device-management@googlegroups.com or try doing a Google search on "How to use compliance policies for iPads in Workspace ONE".