I have a strange fetish for multi hour standardized testing, so this looks great to me. Thanks for posting and for the code!
One question based on your responses in this thread: is this test intended to measure software engineering ability or computer science knowledge?
EDIT - one more question after looking through the grading: do you see people studying for specific roles, or the entire test? While I think the latter is possible, it seems much less feasible than studying for, say, the entire SAT.