I work in a school. We've been through the whole "every pupil gets a computer" phase and it was a disaster - we used eeepcs running Xandros and initially there were complaints about how crummy the programs were. (IE people expected Office, but they got OpenOffice instead).
Then after a few days the breakages started - minibooks left in bags, being dropped, screens smashed, drinks spilt on them etc. So that meant that teachers couldn't rely on everyone having one any more and the whole point of them was lost. They stopped being used and we ended up getting about 30% of them back after the year was out, the rest were damaged or lost. It was an absolute waste of money and it still goes on with other schools today (those who are foolish enough to give tablets to all their pupils, anyway!)
We still use desktop PCs running Windows and Office, as it's what the real world uses (for now, at least). We provide access via UAG to our network for staff and pupils to access their documents remotely.
Google Docs, OneDrive etc are blocked for pupils. Chromebooks are pointless from our point of view due to Google Docs being blocked and lack of intergration into a Windows domain. They also don't run the programs which pupils use in school (which include some digital textbooks, additional educational needs programs, maths programs, Photoshop etc). iPads are beyond useless for our needs, as it's a faff to create spreadsheets or word process on them. Yes, it can be done, but a real keyboard and a decent PC make it much more pleasant.
So, like most schools around this part of the UK, we have several IT rooms with desktops. We have a media suite running Premiere (having phased out Macs a few years ago), a music suite running Cubase and a DT suite running SolidWorks. We have a couple of hundred staff laptops and a couple of hundred curriculum laptops, safely locked away at night.
We are looking at at BYOD implementation, but the powers that be aren't overly keen to have teenagers running around with expensive laptops, tablets etc. And there's the whole network file access issue, we can't add the machines to the domain so they'd have to go through the somewhat clunky UAG system to access their files. There's also the line of who has responsibility to ensure the machines accessing our network are patched and up-to-date, as we don't have the resources to look after people's personal equipment.
All in all, there won't be much change in the school where I work for the foreseeable future: Office and Windows look like remaining the main platform for a while yet. It's the same in the other schools in the area, Chromebooks and the like are simply not useful to the way that schools work around here.