There are also many, less intuitive reasons why continued commitment over time on the student's part is critically important. A student who is not sufficiently committed to her education might manage to "cram" for a test (often with strenuous, even painful effort!) and perhaps pass it, but then not put any attention into reviewing what she has learned, which sets her up to fail later when she will be expected to be familiar with that content and tackle new material that depends on it. It can be a self-sustaining cycle of failure.