I now set up a computer system for a small Swedish school of 60 students and 10 teachers.
We have for some years running Office 365 but only used it for email.
Now we have purchased 20 Microsoft Surface Pro 64 GB and would prefer to avoid a local server.
The computers are not personal. All students should be able to log on to any computer.
We want to run SharePoint Online to share documents and photos. For personal files we have assumed OneDrive for Business.

Wewould prefer to see the directories in the file browser.

Students are between 6-13 years and we'd rather not think they should have to configure lots of settings themselves on every computer.

Can this be solved? I realize it may need a local AD to get automatic about this. In that case, we will do so.
How do other schools?

Thanks in advance.