When you already deleted classroom, you cannot reuse that classroom anymore. There are 2 types of classroom: Current classroom and Archived classroom.
Follow these steps to "Delete current classroom".1. Click Settings icon at classroom that you want delete.2. Click Delete3. System will display Deleted Class window. Click Delete button to confirm or click Cancel to cancel.Follow these steps to "Delete Archived Classroom".1. Go to sub-menu bar Archived.2. Click Settings icon at classroom that teacher would like to delete.3. Click Delete4. System will display Delete Archived class window. Click Delete button to confirm or click Cancel to cancel.