I'm intending to run custom quizzes where collaboration is a risk, and so I will be controlling how much information is returned to students by pre-check, by check and by submit. (See "Passing information over a CHECK" below.)
In particular, an "all green" result would so-to-speak give the game away, because that student could pass guaranteed-correct answers to others who are still at work..
Can I prevent the green indication (caused I think by fraction=1.0)? A hack would be to cap fraction at say .99, and adjust externally the mark. But I would rather a cleaner way.
Thanks for your advice!