As of July 1, the Los Angeles Unified School District will change its homework policy so that it can make up only 10 percent of student grades. The district says that students should be assessed by what they learn as measured by testing, not whether they have finished all of their homework. The district made the move, in part, because many students in the district don't have a lot of supervision at home and should not be penalized for that. But will the new policy encourage students to slack off? Madeleine talks to Duke University professor of education, Harris Cooper.