A family of Microsoft products that enable users to capture, organize, and reuse notes electronically.
Hi,
Thanks for posting back with the information we need and it cleared the cause of the issue.
OneNote and other storage services like saving a Word document or Excel workbooks, your own files will all be saved to your own cloud space called "OneDrive/SharePoint". And without being assigned to this cloud storage license, users won't be able to save anything to the cloud, which caused the issue on your side that can't save a notebook.
So now, to fix this issue and start to use OneNote, please contact the admin/IT department in your school and confirm this situation with them. Saying like as there has no license called "SharePoint", it's not available for me to create a notebook as it needs the cloud storage space normally called "OneDrive/SharePoint".
They should get the point immediately, and share the following screenshot with them also, which is an example of a normal account subscription including license.
In case you need: How do I find my Microsoft 365 admin?
In case admins need: Assign licenses to users - Microsoft 365 admin | Microsoft Docs
Best Regards,
Mia