yoasties

I have no experience with this, but can you not simply use the GSuite MDM options? Main problems will be implementing it when many devices may not be compliant (old android stuff) etc. https://support.google.com/a/answer/7422256?hl=en&ref_topic=7349239 also see this post and consider your school's policies... http://www.edugeek.net/forums/netbooks-pda-phones/168996-meraki-mdm-gafe-device-management.html

Doesn't DRM make them read-only (i.e. make collaboration impossible)?

Good Luck with that. In the current dropbox, Onedrive, Gdrive and 128 Gb USB-drives costing peanuts etc. world one may wonder if the choice should not be formulated between a. Sync'd with some monitoring and control or b/ poorly syncd with lots of manual errors outside our control. :-) It is not known as "Shadow IT" anymore, the register has re-branded it to "Self Starter IT". We'll see.

Has anybody tried OnlyOffice? I really liked the web-version for being able to edit docxs with equations online. Much better than what MS offers.

Well, both Chromebooks and Cloudready devices are encrypted, though the quality does not match LUKS, probably. Implementing Filevault is easy enough to ask MAC users, LUKS or Veracrypt or other good encryption can be asked from most Linux users. Sounds to me that the Windows users are the main problem. Offering help, having policies and asking them to click on "I agree that I have encryppted this environment" etc. may raise concerns about whether the users actually do: but it could be enough. Synchronization would reduce the (sometimes enormous) amounts of information being copied by users that have poor connections and want to work at home.

Would full-disk-encryption on Linux (LUKS), MAC-OS (FileVault) or Windows (Bitlocker) not be sufficient to limit those risks for laptops?

I would be most interested in Cloudready & Chromebooks but I have only been able to find Onlyoffice as a pure-play webclient that can handle docx's browser-only including equations (to my surprise). One advantage would be that the docx's can be stored in gdrive. has anybody tried this newcomer (SAAS or hosted?)? Any serious alternatives to mixing chromebooks with equations in docx or, possibly, google-apps/g-suite? Thanks, Y.