Is there a way to create,edit, or list rubrics?
I see in the documentation I can create coursework, but one of the key pieces of coursework is the rubric.
Unfortunately, the option of editing, creating and/or listing rubrics through the API is not possible.
You can do all of the things mentioned above by using the Beta version of the Google Classroom by using the UI available.
For more information on that matter, you can check the following links.