In terms of work, many 15-year-old girls may not have part-time jobs, but they are likely to be involved in volunteer work, sports, or clubs. These activities help them develop new skills, build relationships, and explore their interests. For instance, a study by the National Center for Education Statistics found that in 2019, about 34% of high school students in the United States participated in sports, and 24% participated in clubs or organizations (National Center for Education Statistics, 2020).