A new report says promising children money to pass exams does not help exam grades. The report says parents could be wasting their money by using cash to get their kids to study more. However, the promise of a trip somewhere nice could encourage students to try harder and do better at school. Researchers from the University of Bristol (in England) and the University of Chicago (in the USA) looked at how promises of cash and tickets to events affected students' studying and learning. Over 10,000 pupils in took part in the research throughout the year 2012. Education expert Dr. Collins said good teachers were better than promises of rewards to get children to study, especially for children from poor families.