Homework ensures that students practise what they are taught at school  Having homework also allows students to really fix in their heads work they have done in school. Doing tasks linked to recent lessons helps students strengthen their understanding and become more confident in using new knowledge and skills. For younger children this could be practising reading or multiplication tables. For older ones it might be writing up an experiment, revising for a test and reading in preparation for the next topic. Professor Cooper of Duke University, has found that there is evidence that in elementary school students do better on tests when they do short homework assignments related to the test 1. Students gain confidence from such practise, and that shows when they sit the tests.  1 Strauss, 2006