When my children's homework comes back, the parents have to check and approve each one, and they have to sign. If they have any problems, they have to go to the parents. I personally think that parents should cooperate with the elders

Your idea is correct. Or you can talk to the school leaders about your ideas and suggestions. In this way, you can check your children's homework with peace of mind, so you don't have to worry about problems. Or don't tell the school leaders what you think and just do what the teacher says, but it will be very hard for you, busy at work and grading homework for your children at the same time.