While there is no built-in limit to the number of classes you can create or the number of students in a class, you may experience performance issues with too much data in your account.
We recommend creating a separate class for each period or section you teach rather than including all students in a single class.
In each class, we recommend a maximum of 45 students.
To help keep the site running fast, we also automatically archive your older classes each summer. You can always opt-out or unarchive your classes, however. Please see this article for more information: Why does NoRedInk automatically archive classes?