Around the world, girls do better than boys at school. These are the findings of a recent study that looked at the test results of 1.5 million 15-year-olds in 74 regions across the world. In only three regions, boys do better than girls. So what are the causes of girls’ better performance? In the UK, girls do better than boys in exams that are taken at the age of 15 or 16, called GCSE s. According to education( 教育) expert Ian Toone, this is because girls and boys are brought up in different ways. “Boys are expected to be more active from an early age, and the active movements of baby girls are often not encouraged ... So girls develop the skill of sitting quietly for a longer time. The skill is useful for studying at school, such as preparing for GCSEs.” He goes on to say that boys often stay together in larger groups than girls. Because of this they are more likely to be influenced( 影响) by their peers( 同伴 ).He says that GCSEs often need you to work alone, and groups of boys may not think it is ‘cool’. This is supported by research in the UK that says girls are out-performing boys at the age of five. So what is the answer? Should teachers separately teach girls and boys? Or do exams and school courses need to be changed to better reflect( 反映) boys’ skills? These are the questions facing teachers in many countries.