I am using Moodle 2.6.4 and have the latest installations of HotPotatoes and TaskChain. My usual setup for a TC is Total of task scores, Highest grade, Ignore voids: No, Grade limit: 100, Grade weighting: 100. I also allow free access once 90% on a TC is obtained to encourage review.
Most of the times the conditions within a TaskChain are set such that 90% must be achieved in a HotPot before advancing.
I choose TaskChains from the Activities Block to view reports from which I get a report below. In this particular TaskChain there are seven HotPots.
Let's look at Jake with that 27%:
There are 30 entries on the first page. Here is the bottom of that page:
Save for that one zero percent all are greater than 90%. I am not sure why the 27% overall. What are these grades for then?
There are bunch of other screens within in viewing reports that I do not understand the results of. I will put them into replies to this.