Girls are just as capable in maths and science as boys, but confidence tells a different story. According to the American Association of University Women (AAUW), girls earn grades equal to or higher than boys in maths and science, yet they are less likely to believe they’re good at these subjects. Confidence, not ability, is often the difference   International data from the OECD (Organisation for Economic Co-operation and Development, an international group that studies educ