* Country: Employment rates among high school students differ greatly between countries due to varying labor laws, economic conditions, and cultural norms.
* Age: Older high school students are more likely to be employed than younger ones.
* Socioeconomic factors: Students from lower-income families may need to work more often to contribute to household income.
* Time of year: Employment rates might fluctuate seasonally (e.g., higher during summer breaks).
* Data source: Different surveys and studies will use different methodologies, leading to varying results.
To find a relevant percentage, you'd need to specify the country and potentially other factors mentioned above and then search for statistics from reputable sources like the Bureau of Labor Statistics (BLS) in the US, or equivalent agencies in other countries.