Teens from families earning $50,000 or more per year are more likely than lower-income teens to write up science labs (75% of higher-income teens do this, compared with 67% of lower-income teens) and to create audio, video or PowerPoint presentations (72% vs. 61% for lower-income teens), according to Pew Internet Project. Finally, some gender differences exist with respect to the types of writing teens do at school, although these differences are generally quite minimal. Specifically, girls are slightly more likely than boys to write essays at school (96% of girls do this, compared with 91% of boys), while boys are slightly more likely to write computer programs (13% of boys and 7% of girls have done so in the past year).