I think the Quimbee exams should have a description of their tested topics.
For Ex. a Crim exam should have a heading stating "Subject Matter: Rape, Murder and Burglary". Thus, If students want to began taking exams early in the semester, they can easily skim the exam bank and choose a topic they should know to test themselves.
This would be more helpful and less time consuming than having to wade through the test and read the call of the question to determine if they can handle it.