I've been using MDM which when it works is fine. A few months ago just before I was about to change to Apple School, MDM stopped working in both schools I look after and wouldn't restart with the usual nudge. I've been busy as I'm moving both over to Office365 among other projects and I haven't had the time or inclination to fix them as no one has asked for apps. I've decided to start from scratch once the projects are done at Easter. Only 200 iPads and about 40 Macs in total so not really that much.