Dear Connor Larkin
Good day! Thank you for posting in the Microsoft Community. We are happy to help you!
First of all, we apologize for the inconvenience and inconvenience caused to your work. Based on your description, please kindly try the following:
Method 1:
- Click the Start button, and then click Settings.
- Click Accounts, scroll down, and then click the Microsoft account you would like to delete.
- Click Remove, and then click Yes.
Method 2:
- Press the Windows key and type “Control Panel”.
- Select “User Accounts” and click it.
- Go to “Manage another account” and select the account you want to remove.
- click “Delete the account”.
Method 3:
- Press the Windows key and type “cmd”. then right click "Command Prompt" and select "Run as administrator"
- Type net user [the username you want to delete}]/delete and press “Enter” - please fill in the usernane.
For your reference **** Add or remove accounts on your PC - Microsoft Support
Meanwhile, if you still need further help, to help you better I have to double confirm whether you meant you want to remove this school account from some office 365 apps(such as outlook/teams/sharepoint/word etc.) or just want to remove it from your windows device, please kindly explain it, thanks.
Thank you in advance for your understanding. Your patience and cooperation will be greatly appreciated. I hope all the best!
Sincerely
Kerry Chen | Microsoft Community Moderator