Joseph:
Great. You know, Stephen Covey (7 Habits of Highly Successful People) states "Begin with the end in mind. I think pretests are sort of like that. Let's first see at what level the student is operating at, then tweak the course to place emphasis on weaker but essential areas, even if that's at the expense of listed topics (but less impotatant). BTW, that last sentence is one of Coveys values grid.
Regards, Barry