As a security measure, some activities in Classroom have limits depending on the type of account that you have. If you reach a limit, you can’t complete the activity.
The value of these limits can change without notice to protect Google's infrastructure.
|Activity or feature||G Suite or school
|Personal Google Account|
|Teachers per class||20||20|
|Class members (teachers
|Classes you can join||1,000||100 maximum, 30 per day|
|Classes you can create||No limit||30 per day|
you can send
|No limit||100 per class, per day|
|Guardians per student||20||Feature not available|
|Email address visibility||No limit||Feature not available|
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. For details, see Understand Groups policies and limits.