* Definition of "playing sports": Does this include casual participation in gym class, participation in school-sponsored teams, or involvement in outside leagues? The broader the definition, the higher the percentage.
* Geographic location: Participation rates differ across states, countries, and even within regions of a country due to cultural differences, access to facilities, and funding for sports programs.
* Socioeconomic factors: Students from higher socioeconomic backgrounds may have greater access to sports opportunities and resources.
* Gender: Participation rates often vary between boys and girls.
* Year of data collection: Participation rates can fluctuate year to year.
While you won't find a single definitive answer, studies and surveys on youth sports participation can provide estimates. However, these will be ranges rather than precise percentages, and you'll need to consider the methodology and limitations of each study to understand its relevance. To find relevant data, you could search for reports from organizations like the National Federation of State High School Associations (NFHS) or the Aspen Institute's Project Play.