I think the point about the scoring is a valid one. I had thought to try and turn the scoring off altogether, but that would seem a bit silly as there is then no prompt to say that you need to try again. It will require a hack into the code to change the way that the scoring works which may be a bit of a challenge. I will see if Ronna is familar with Java which is what it is written in.
The idea with the 100% was that when going through the lessons, in revising for the review tests and exam, you would keep going through them until you could do all of the questions from memory without any mistakes. It is something that I put in myself since it is only relevant to the online version, so I will make a note of it and I can discuss with Neil/Yvonne when we make some more changes.