Pass/No Pass “Grading”
I appreciate being able to take a class where I can turn in my work and be given feedback quickly after its turned in. The feedback can be anything from what was missing to what was interesting about it to questions about the work, which is exactly the way I learn best. The green light concept is a continuous reminder of work that is completed, needs to be revised, or hasn't been submitted, and is a method I think should be used in every classroom. You could call the opposite "red lighting" assignments, and highlight that red, but that's just an idea...