Hi Deizy, You have to be clear in how much Homework was given.
Homework means a repetition of classwork as a means of staying on top of things. If the teacher asked the children something that was very difficult and needed a parents’ assistance, it is one thing. Then you have a valid complaint. But if the teacher asked them to just review ( on their own ) the work, I don’t see anything wrong with it. Keep in mind though, that if your child is having a hard time with it, the teacher ought to know about it, so she can review the material with your child.