Teams is an app within the Office 365. It allows you to set up communication and collaboration spaces for any team and it providers similar functionality to Google Classroom, when set up to include teacher(s) and students. If you are a member of multiple teams then the beauty of the app is that it will bring all of these together in one place.
Take a look at our video overview of features in Teams:
You may wish to discuss with your network manager, O365 administrator or Gaia the potential of synchronising users between your management information system and O365. With School Data Sync operational you can auto set up classes in Teams so that teachers do not have to manually add the names of students. Additionally, the groups will stay up to date as pupils join and leave. Third party software such as Salamander or Ruler may be needed to facilitate this automation.