When you navigate to CompassNet you will see this screen:
Enter you old credentials and click Next:
Click "Continue"
Click on your Harding Google Account
Success!
Going forward when you login to CompassNet put your Harding Gmail address (with @hardingacademy.us) in the username field (also check the "remember me" box, click "Next"
Click the "Sign In with Google" Button on the next screen.
Click on your Harding Google Account