The amount of homework in the United States is relatively large, and the homework of American universities is counted in the usual grades. Your homework every week is equivalent to a quiz. And every semester, the final total score is calculated according to the mid-term exam, final exam and usual homework scores. According to the ABCD score, 90- 100 is A, 80-90 is B, 70-80 is C, and D is lower than 70 or fails. If you are a graduate student, there is also a requirement that the average score of each semester should not be lower than B, otherwise you will stay in school next semester and be expelled if you fail again. In other words, the average passing score of master students is above 80 points. Whether you are tired or not varies from person to person. Some foreign students feel tired, which may be caused by changes in the language environment and learning environment. If you have strong adaptability, study hard and pass the language foundation, you won't feel too tired. In fact, the course mainly depends on your school and major. Some majors have many core courses, and some are interdisciplinary, so the scope involved will be relatively wide, resulting in many courses, which is difficult to understand. So it depends on the difficulty of professional application and course difficulty. But students don't have to worry. Remember to come to us for help when you encounter difficulties ~ The most professional academic counseling center for international students can help you solve all your academic difficulties ~