9 January 2017 Last updated at 07:04 GMT
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.
People have been trying to work out if homework is a good thing or a bad thing for many years.