I have a timed quiz with an essay question. I would like to give feedback and a temporary grade to it then allow students to revisit their essay based on my feedback, for extra points. Is this possible and if so, how can I set it up?
This is not currently possible in either the legacy quiz tool, nor Quizzes.Next.
My suggestion would be to use an Assignment for this purpose - a score is a score, feedback is feedback, and assessment is assessment regardless of the form used. In your example, an assignment would actually work better because you can provide feedback in the form of annotations on their submissions which cannot be done in a quiz. Students can resubmit assignments as long as the assignment is available.
I hope this is helpful, and let us know how the whole thing works out!