When we were researching Totara, we read/heard a lot about detailed reports you could run for quizzes/exams. We specifically need to be able to label questions by topic, and we thought we could use the tags option to do so. For instance, for all questions about "science" we would include the tag "science" and then, hopefully, we could run reports that say, what percentage of questions tagged "science" did users miss? And, hopefully, even dig a littler deaper to say, what percentage of quetions tagged "science" in the course named "Science 101" did people miss.
We've been googling, searching, and exploring within Totara and can't quite find good info about what tags do and if they can be used in this way.