Homework: 'schoolwork that a student is required to do at home'. Makes it sounds so easy. Doesn't capture the emotional stress, missed sleep, arguments, tears, uncertainty, frustration (and that's just what parents experience). Homework is, and should be, the topic of hot debate these days.
If you're interested in the issues surrounding homework, you might want to read The case against homework: how homework is hurting our children and what we can do about it
or have a look at stophomework.com
Another well-known homework themed book is Alfie Kohn's The Homework Myth. Stirred more responses on the Amazon page than i have ever seen.
Even if you're a huge fan of homework, there are some interesting issues flagged.
See also Cory Doctorow's comments on boingboing