Opinion about exams

I think we should do test more often because it helps us to improve more in the subjects and to reinforce what has already been learned. In my opinion today the exams are not much use because the are studied only for the exam and then you do not remember anything. For better the exams should be apprised to study  the things by common sense and not by memory I think that would improve more and more the results in Spain. In the school could also ecourage the students doing a competition with the best grades of the school.