Android (make sure you set up your @stu.cfisd.net google account before you try to log into Classroom. See the "Troubleshooting Android" section below.)
If you get a message saying the account you are logging in from is not a school account, you are probably using more than one account on your phone. Select “Try Another Account” and select your CyFair account.
Android:
The CyFair system applies policies whenever you are logged into a student account, so you have to accept policies that the district will apply. Some android phones require you to download a policy manager to access these policies. Don't freak out! These policies are only in place when you are logged into and using a school account (such as Google Classroom).
BEFORE you set up Google Classroom, make sure your @stu.cfisd.net email account is set up on your phone.
Go to Settings
Accounts
Add Account
Google
Enter your phone password
Enter your school email and password, then just keep clicking next until there are no more changes to make.
The policy may make you change their password to a longer one (6 digits).
If you get an error message saying “Your admin hasn't activated Classroom…”
Swipe down from the top of the screen to get to the notification center.
You should see a Google Account Action waiting, click through it (see step 2)
You may not have made a change that the district policy required, or have tried to log in directly through Classroom without setting up the account first.