Limits when using Classroom

As a security measure, some activities in Classroom have limits depending on the type of account you have. For information on account types, see see About Classroom user accounts.

If you reach a limit, you’re prevented from the activity whose limit you reached.

Class limits

For all types of accounts, Classroom has the following limits:

  • Maximum number of teachers: 20
  • Maximum number of members (teachers and students): 1,000
  • Maximum number of guardians that can be assigned to a student: 20

Personal Google Account limits

Users with a personal Google Account also have:

  • Additional limits to those listed above
  • Less features than users with G Suite for Education accounts

Additional limits on personal Google Accounts

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

Activity or feature Limit
Classes you can create 30 per day
Classes you can join 100 maximum, 30 per day
Class size (teachers and students)  250
Class-member invitations you can send 100 per class, per day

Features not available to personal Google Accounts

Some Classroom features are not available to personal Google Accounts:

  • Email summaries for guardians—Teachers can’t invite parents and guardians to sign up for an email summary of the student's upcoming or missing work.
  • Students email to classmates—Students using Classroom with personal accounts cannot view the email address of their classmates.

Groups policies and limits

These limits apply for all G Suite editions. 

Classroom uses Google Groups for all students and teachers with a G Suite for Education account. Each person can only be in a certain number of groups. See the Membership section of Understand Groups policies and limits for details.

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