I realize this is a year later, but I was wondering if someone was able to get a feedback system working. I don't think I need something quite as complicated as described above, but I would like to provide the students feedback about what skills they need to study based on their placement exam results.
Basically, I would like the students to see two things when they finish the test. 1. Their score. and 2. A list of topics that the students should study based on their incorrect answers to the test questions. To make things easy, I could associate a topic or two to each exam question.
Any ideas you have would be great.