In my model, I advocate for time bound assignments and for parents to transition from acting as enforcers and, instead, becoming observers. Once you cap the time and dispel the belief that all homework must get done, you can stop and step back, and figure out what is happening with your child. As an observer, you can obtain information and share it with the teacher, with the goal of ultimately helping your child. As an enforcer, you get caught in an ongoing and inevitable, unproductive battle.
For more information on Dr. Goldberg's model, read other postings on this blog, visit his website, The Homework Trap, or read his book, The Homework Trap: How to Save the Sanity of Parents, Students and Teachers.