The client doesn't use One DriveThat is not really what I was getting at. I was referring to one point of common confusion is logging into MS accounts by inadvertently choosing "Personal" at first log in instead of "Business/School" which is what you need. Another potential point of confusion is the students created both a Microsoft account for the local pc and an office365 account. Hopefully the office365 account is what is used.
Of course, I find it kind of weird they are trying to map network drives, usually that is done in a domain setting, not with some workgroup setup using Office 365. If they are using Office 365, why are they mapping network drives?