Based on what I see from the replies, I have the impression that different countries have different answers for this question.

So my precisely question is if there is any way to reply the question 'how much homework do you need to grade?' by saying 'I need to grade thirty (units) homework every week.' But I always feel this kind of reply to be very indirect. The amount of homework to grade mainly depends on how many students we have. I feel if I ask another TA how much homework he needs to grade, the usual reply will be like, 'I have two sections, fifteen students each, and we have one assignment every week.' Since the amount of exercises is usually the same, we don't really care about it. What our students need to do for homework is usually about ten exercises from the textbook.

After reading the replies, I think I should make the situation more clear.

The noun 'homework' is uncountable so he cannot say 'I have thirty homeworks to grade every week.' My question is that if there is any unit of homework so that the sentence 'I have thirty (units) of homework to grade every week' can be valid? Consider the case when a teacher has thirty students in the class.

Are there any homework