Once a question was asked to famous basket ball player Michael Jordan, Why are you so sincere about your practice?.
The immediate answer was, I need perfection. The way I do my practice will reflect in my game. If the practice is good, the game will be good.
This is what, similarly happens in your exams. Before the main exams, revision tests are being conducted. But, most of the students are reluctant about the revision tests. Though there is not much value for the marks of revision tests, those are considered as the gateway to main exams. So, students must write revision test with at most sincerity like main exams, since there are 2 main aspects involved in it.
First aspect: One can assess his/her performance through these tests. Therefore a student could correct his/her mistakes done in revision tests.
Second aspect: Having a good attitude and sincerity towards revision tests would psychologically help to handle the main exams. But if you show negligence towards revision tests, you will find the main exams too hard. For example; Rehearsal is inevitable aspect before any stage performance, because good rehearsal will ensure the good show on stage. Similarly ......
Practice never can be neglected. Only dedicated practice will help to succeed. A good student will always write revision test sincerely.
Practice can help to do better; hence we should take it seriously.