Changing your account details is easy!
Log in to your account.
Click on your name at the bottom of the navigation panel and select "Edit profile".
Make your changes and click the Update button.
If you're not an admin in the school you'll see a Permission Settings section.
Here you can request to become an admin. To do so:
Select the Admin selection.
Click Update to save your changes. This will notify your current school admin(s) that you've requested this access and they will be able to give you admin rights.
And that's it! 🙂