Before you can delete a Google Classroom class, you'll need to "Archive" it, which is essentially a way to deactivate it. Any instructor can archive a class, but only the head teacher can delete it.

You can archive a class in Google Classroom on desktop and mobile using the Archive function in the Settings menu. When you archive a Google Classroom, everything in the class will be preserved ...

It enables them to provide rich, nuanced feedback to students directly and quickly, and allows them to communicate with students,” says Akshat Sharma, the lead project manager of Classroom at Google. ...

Google Classroom is a platform designed to help improve the interaction between educational institutions and their students. The platform can be used by teachers, to streamline student assignments, ...