If you're not shuffling questions in the quiz let JQ1 be, say #1 and PQ1 #2 and let John grade #1 and Peter #2. And if they set in the results page 'Show / download marks for each question' to yes the grading process may be quite efficient. 
Itamar Tzadok
Posts made by Itamar Tzadok
Yap, just tried it and it works. I set the Grades Letters to 'Complete' for the range 67%-100% and 'Incomplete' for 0%-66.99%. Then I set the grade display type (Grades | Course settings | grade item setting) to letter, et voila, all quiz grades 67 and above appear as complete, less than 67 as incomplete and the overall course grade which is set to mean of grades also appears complete/incomplete respectively. This is also what is shown in the user grade report. Hope that helps.
I think so but you may be able to get the Pass/Fail effect in the gradebook by adjusting the Grades Letters according to the desired percentage (the grade 'letter' can be any string) and then setting the grade item to show Letter grades.
Alternatively, if overall feedback is implemented for a grade item it may be applied by the teacher to some items (e.g. category/course total) as automatic feedback based on grade boundaries while other items remain with manual feedback.
However, it works like I want, at least in some courses, so changing it like Brent wants won't fix but break unless it is added only as an option (when that day comes, that is).