When students are reviewing their quiz results immediately after completion and looking at the correct answers they seem to be getting timed out and returned to the course page before they've had a chance to go through the whole quiz and see all the correct answers. The session timeout for the site is set at 2 hours so that can't be the problem. Screen shot of quiz settings attached - as shown immediately after the attempt students should be able to view correct answers
Moodle 2.6
