How can I delete a school account that doesn't exist anymore?

[Microsoft Windows]

So I have my school account from before summer, now that I finished that school, I believe the account doesn't work anymore. I've done everything I can to delete it but it doesn't have the option to disconnect or delete. All I get when I tap on the account is 'Mange' and when I tap there it asks me to log in but it says something is incorrect (probably due to the account not work) so I can't log in to remove it or whatever. I don't know how to remove it. Any help would be appreciated

Continue reading...