How do I use a Google Apps account to sign in to my Acer Chromebook?
If you use Google Apps to access Google services at work or school, you can sign in to your Chromebook using your Google Apps account. However, the account must be using the new Google Apps infrastructure.
For more information about using Google Apps accounts to sign in, visit Using a Google Apps account to sign in page.
For more information, visit the Chrome OS Help Center.