It works just like cloning in that it copies all the instructional material, code, files, and unit tests into a new classroom, except the owner would be the teacher you're sharing the classroom with.
Sharing classrooms is simple: from your teacher dashboard click on the menu button (⋮) and select 'Share'. We'll then provide a link that you can use to share your classroom, or you can enter emails to share with.
Note that assignments will be in draft status in the cloned classroom
In the future, we'll also introduce sharing on a more granular level -- namely: assignments.