If they're normies and won't care about installing critical updates, make sure you use a #Linux distro that does this automatically for them. From our experience with managing around 20 school PCs, #Ubuntu or its flavours with their hated #snaps are perfect for this!

Otherwise, if you want #flatpaks, we've also tested #PopOS on several machines with automatic updates enabled for a year with no issues or intervention required.

Perhaps, #LinuxMint can do it too but someone else will need to share their experience. Hope this was helpful.