This is the screen shot of the progress of a student inside MOOC. Of course is available for every student. It is far from being finished. Specially before official launch.
You can see that in every unit you can see how many nuggets you have taken and also if there are some quizzes associated to the nugget the results of the quiz.
Quizzes could be taken as much times as you want. However only first try is taken into account for the global account.
We are considering to add some weight to the different quizzes but we are not sure if we will be able to include it before official release.
We are also working on a global figure summarizing results of every quiz.