Each test section starts with the set of questions in the first module, which the students must complete. Before going on to the second module, students can demonstrate their progress with this module’s wide range of easy, medium, and hard problems. Based on how test-takers perform in the first module, the questions in this second module are generally targeted to the test-takers achievement level; questions are either (on average) higher difficulty or lower difficulty than questions in the first module. As a result, the exam “adapts” to display questions that are better suited to a student’s level of performance.