The pass score for quizzes is 80%.  If you don’t pass, it won’t ‘mark complete’ and you need to re-do it.

You can see your quiz results and any answers that are incorrect in ‘My Profile’ – click on this under ‘Welcome (your name)’, then click on the left hand side ‘arrow’ to open up the module quiz option.  Then click on Statistics.

NB. The quizzes don’t always cover the actual module, in fact later quizzes may test what you’ve learnt earlier in the course.