If you use Clever, you don't need to create classes manually! You can simply sync your classes and students with Clever. After you do so, your imported students will be able to use their Clever login info to log in to Formative as well.
1. On the "Classes" page, click on "Clever Roster Sync:"
2. Log into your Clever account:
Your class(es) will appear including all the students currently enrolled in them.
To re-sync the classes, simply follow the same steps above!