I do allow my kids to miss, then make up, up to 3 homeworks per marking period. Sometimes life gets in the way of school. We don't always realize it, but it's true. And our kids aren't always comfortable with telling us the reasons, but they exist anyway. It helps my kids a lot. They're still responsible for doing the work, and it's normally only 3 per marking period (out of a typical 30-35.) But when it's Grandma's birthday dinner in Brooklyn, or when the dog dies unexpectedly, or when their brother breaks his leg and they spend the evening in the ER, or when they're coming down sick and get off the bus and head for bed, my policy helps them. It doesn't matter to the chronic offenders, since they never get around to making up the homework. But hit makes a huge difference to the vast majority of great kids who sometimes get overwhelmed.