Hi Shaya,
Try going to OneNote for the web (on your school account) and then import those notebooks into your personal account.
- In any modern Web browser, go to OneNote for the web. Tip: Exporting notebooks is not currently supported in Windows Internet Explorer. We recommend using Microsoft Edge on Windows 10, or any other modern browser in older versions of Windows.
- Enter your credentials for the Microsoft account containing the notebook you want to download. (Skip this step if you’re already signed in.)
- Under My Notebooks, right-click (PC) or Control-click (Mac) the name of the notebook that you want to export, and then click Export notebook.
- On the screen that opens, click Export.
- Follow your browser’s prompts to save the file in the location you choose.
If this is helpful please accept answer.