When you'd like to delete one or more of your Class Notebooks stored in OneDrive, follow these steps. This applies to notebooks you've created using the Class Notebook app.
Note: Class Notebooks you create for classes in Microsoft Teams are not stored in OneDrive. They can only be deleted by deleting the team and all its contents. Archiving a team that's no longer active may be a good solution instead.
Sign into Office 365 with your school account.
From My files, select ClassNotebooks.
Select the check box next to the Class Notebook you'd like to delete, then select Delete.
When prompted, confirm that you'd like to Delete the notebook. Your Class Notebook and all its contents will be deleted.
Recover deleted Class Notebook files from the OneDrive Recycle bin
Create a Class Notebook in OneNote