Ray Morris

I'm thinking about the utility of being able to add fields to questions in much the same way as you can add fields to user profiles. Different users want to include various information with their question banks.

Just today, one of our departments told us they have a need to record a citation for each question, showing where they found that correct answer.  They also want to mark them as they are validated y an expert, like so:
Validated by Joe Jones, PhD 7/20/2013

and review of the statistics like P and discrimination index:

Reviewed for discrimination statistics by Ms. Teech Goode, 7/29/2013

Others want to mark difficulty level, etc.  I noticed that yesterday another user posted on the forum wanting to do the same thing. 

https://moodle.org/mod/forum/discuss.php?d=233238

User profiles use the database tables user_info_field and user_info_data to allow users to add fields.  Would similar functionality in the question bank be useful to you, perhaps?  The user profile fields seem to be a successful feature, should question bank fields operate in much the same way?

IE itself has an "Edit Mode" where you can mark up the pages you are viewing - no plugin needed.  

Try export as XHTML, I think it is.  After downloading it, you'll need to open it in your browser.  One of the export options is reasonably suited to printing on paper - I think it's labeled XHTML, but otherwise play with the other options.

Also if you ever move to one that's not hosted, so you can add module files, message me or email me for a more robust solution.

Is this category stuff an attempt to make sure that they don't get some of the same questions on the second attempt? Is that what you're actually trying to achieve?  If not, what's the actual goal?  (Pick from category blah blah is a method of a achieving some useful goal, I'm asking what you're actually trying to achieve).

I think the only way to do the category stuff you mentioned would be with multiple quizzes. If they fail the first quiz, the second one shows up.  We do that in some of our courses.  If you do it that way, https://tracker.moodle.org/browse/MDL-37993 may be of interest to you.

It's not 100% clear exactly what you're looking for, but this may help:

https://moodle.org/mod/forum/discuss.php?d=231146

In that thread, I posted three ways to get some per-category results.