Does exactly what it says it will and does it well.

I use this for my classroom website (Physics) and it works perfectly. I love the concept of the question pots and I love the implementation even more. I create a pot and make the first question, then I can copy that question several times and then edit the variables. Rinse and repeat and the end result is I end up with a quiz with different questions displayed to each student, but each student receives the same overall difficulty of quiz.

I’m then able to reuse those questions on unit tests and comprehensive exams.

It’s also really nice to be able to set a quiz that needs to be completed by a certain date, require a user to be logged in and limit the number of chances to take it ( and obviously record a score). This allows me to administer the quiz when I want, but once everyone has completed it and I have recorded the scores I can then change the settings to allow students to retake the quizzes as often as they like (and in some cases for corrections).

This should be a paid plugin.