People have been trying to work out if homework is a good thing or a bad thing for many years.
Recently, a report about teaching in primary schools was done by an organisation called the TSC, which works with the government and schools in England.
It says: "Homework [in primary schools] should have a clear purpose."
The report explains that if there isn't a clear reason for the homework and the pupils won't necessarily gain something from doing it, then it should not be set.
Dame Reena Keeble, an ex-primary school head teacher who led the report, told Newsround: "What we are saying in our report is that if schools are setting homework for you, they need to explain to you - and your mums and dads - why they're setting it, and your teachers need to let you know how you've done in your homework."
Newsround spoke to Dame Keeble to find out more.