Google Groups make it easy for groups of people- such as project teams, departments, or classmates - to communicate and collaborate. You can send an email to everyone in a group with one address, invite a group to an event, or share documents with a group. You can also create an online forum to discuss a topic, share information and updates.
G Suite for Education accounts.
Using Google Groups at work or school
Below are some highlights from the support center linked to above:
For additional help with Google Groups:
For more details please review: G Suite Learning Center: Get Started with Groups