(Homework) Is Tuition a must to Score Good Grades?

In my opinion, we do not really need to go for tuition classes. Not only it is a waste of money, sometimes it can also be a waste of time. I hereby strongly think that tuition is not the only answer to attaining high grades.
First of all, we have to work harder and rely on our own effort. We need to pay attention in class when the teachers are teaching. We also have to complete all of our homework and if there is anything that we do not understand, we can look for our own teacher for consultation.
Furthermore, not all tuition teachers are good. In fact some of the tutor does not even have proper qualifications and is unable to answer difficult questions. Some of the tutor even purely works for money. Besides, they generally teach a big crowd of students. The noise and the number of students will make it even harder for us to concentrate.
In order to score well in examination, we need to manage our time properly. It is a bad habit to do the revision at the very last minutes. So I suggest that we have a timetable and plan our hours of study every day. A timetable helps us to manage our time and at the same time, show us clearly hoe much time we need got certain activities.
So if we can manage our time well and study hard, I believe that we do not need tuition in order to archive good grades in examination.