One contributory factor is entrenched stereotypes about which careers are suitable for men and which ones for women. They are passed on to children by their families, teachers and society at large. Indeed, PISA reveals, that parents are more likely to expect their teenage sons than their daughters to work in STEM occupations - even when they perform just as well as their male classmates in mathematics, science and reading (OECD, 2015). Students could enter any job title or description.