Yes, students under 13 can sign up. When signing up, there is a toggle you have to click on if they are older than 13. This is for privacy reasons and to protect students identity and data as we are COPPA compliant:

Under 13 sign-up to Sutori

There are therefore certain actions under 13s cannot do, including making their stories public and exploring content on Sutori. Furthermore, their full names are never displayed to protect their identity (Kim Jackson will be displayed as Kim J.).

Here are our terms of use and privacy policy