In my opinion, to have quiz, test, and homework assignment thoughout the semester is better to just have the midterms and finals.  Because while we doing the homework and preparing for the quiz and test,we can overview the knowledge we studied in the classes,so if we have questions,we will figure them out as soon as possible.  However,if we just have the midterms and finals, we will have more and more questions, and it will be more difficult to understand.  Moreover, in oder to get a good score during the quizs and tests, I will study hard thoughtout the semeter,but if we just have the midterms and finals. Maybe I will relax on the daily time and study very hard several days before the midterms and finals.