If you have a Windows 10 desktop, start the Mail program and add an email account. Fresh installs will start with a wizard to add a new account. Both processes follow similar paths.
The following sequence should have your school email on a local computer in under two minutes, if sufficient bandwidth is available.
Add a new account
Note: Image has been modified to reduce space.
Select Exchange, Office365
Enter the e-mail address
Enter the Sharklink password
User name and server
Two changes are needed on this screen:
Change the user name to match the email address.
Change the server to match
Note: I opted to enfore the policies. You should choose the option which best fits your environment.