As an instructor, I would like to be able to start where I left off when I was last logged in.
The standard auth/login pattern accepts a continue or next callback URL to redirect the user once authenticated. That's usually the target URL of the resource you're attempting to access. If that's empty, you default to the last URL help in local storage. You'd keep updating that URL as the user moves around the site.
As an instructor, I would like to be able to start where I left off when I was last logged in.