Limits when using Classroom

As a security measure, some activities in Classroom have limits depending on the type of account that you have.

Google Classroom limits

The value of these limits can change without notice to protect Google's infrastructure.

Activity or feature Google Workspace or school
Personal Google Account
Teachers per class 50 50
Class members (teachers
and students)
1,000 250
Classes you can join 1,000 100 maximum, 30 per day
Classes you can create No limit 30 per day
Class-member invitations
you can send
500 per day, per teacher 100 per day, per teacher
Guardians per student 20 Feature not available
Email address visibility No limit Feature not available
Topics per class 200 200
Classes you can select to simultaneously post an assignment, material, question, or announcement 20 20

Important: You can invite more than 50 teachers, but only 50 teachers can join the class.

Groups limits

Classroom uses Google Groups for all students and teachers with a Google Workspace for Education account.

  • Each person can only be in a certain number of groups.
  • If you invite a group to join a class as co-teachers, the group must have 10 or fewer members.

For details, see Understand Groups policies and limits.

Related topics

Was this helpful?

How can we improve it?
Clear search
Close search
Google apps
Main menu
Search Help Center