Repeat Quiz button will not always work and we want it to even if they pass

We had a similar issue.  We wanted to allow users to retake for a higher score, if they desired. 

We accomplished this by creating a submit all, formatted quiz with a custom "progress" slide that is presented to the user at the end of the sequence of questions but before the final results slide.  I can breakdown further if you'd like, but in the interest of time, here's a simple take on what it does.  We used a combination of the advanced actions and on-slide system variables to accomplish this.

• When user gets to progress slide, captivate code determines whether all the questions have been answered.  If not, it presents the user with an "incomplete" alert via text box and a button that brings them back to the first question. 

• If they have completed all questions, then it uses a bit of code to calculate the score. 

• If the user has not achieved the 80% minimum, then it displays an alert via text box that displays their score (and says they must achieve a higher score in order to complete the course) as well as a button that takes them back to the first slide. 

• If the user has achieved a score equal to or greater than the minimum of 80%, the user is then presented with a text box congratulating and letting them know that they can now either retake for a higher score (by pressing the button to take them to the first slide) or they can commit their score to the lms (by selecting other button set to "advance to next slide"). 

• If they do commit their score, they then have to "confirm" this choice via the captivate pop up "submit all" box which is a bit redundant, but isn't too bad, and seemed to be the only way we could accomplish this.

I think that about sums it up. 

ps. Though the exact reason escapes me at the moment, for our purposes we did also find it necessary to adjust a bit of javascript from the scormdriver.js file in the published package.  It defaults to false, so we changed it to "SCORE_CAN_ONLY_IMPROVE=true"

Also, with the exception of the final results slide, we used all custom made buttons and would simply drag the default buttons off to the side.

not a perfect scenario, but hope this helps.

The Captivate developers have provided no way to change the default quizzing functionality here.  If the learner achieves a passing score then the Retake Quiz button does not appear on the Quiz Results slide.

However, if perhaps you are using Captivate 9 and your quiz questions are not really intended to be a true assessment anyway, why not replace the quiz questions with Knowledge Check questions instead?  Have you tried that?