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.
Class limits
The value of these limits can change without notice to protect Google's infrastructure.
| Activity or feature | G Suite or school account |
Personal Google Account |
|---|---|---|
| Teachers per class | 20 | 20 |
| 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 |
No limit | 100 per class, per day |
| Guardians per student | 20 | Feature not available |
| Email address visibility | No limit | Feature not available |
Groups limits
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.