Very recently Microsoft enabled their Windows 10 OneDrive consumer sync client with the ability to add a business/work account and allow you to sync that to your local PC or tablet.
This has been on the OneDrive for Business product teams roadmap since this time last year and now this updated sync client allows those connections through one client instead of two separate ones like it was before.
This simplifies the process of accessing both personal and work related files and the same thing can be done on the OneDrive Universal Windows Platform apps for the cloud storage service.
This how to will walk you through the steps of setting up your work account on the latest version of the OneDrive app for Windows mobile devices.
Since the desktop OneDrive UWP app is just like the mobile one you should be able to follow these same steps to add a work or school account in that app as well.