1. Login to Google apps email as a Google apps Super Admin.
  2. From the "gear" drop-down menu select Manage this Domain.
  3. Click on Security.
  4. Click on Advanced Settings and then Set up single sign-on (SSO) link.
  5. Update your URL for each of the three circled items below so that they match your new login URL.
    Example: If your public website address is https://www.schooldomainname.net/app/sso/google, your login URL will be: http://www.schooldomainname.net/app/sso/google (Just remove the "s" from the "http".)