* Country: Child labor is far more prevalent in some parts of the world than others. Developing nations often have higher rates.
* Definition of "child": The age at which someone is considered a child varies by country and organization (e.g., UNICEF often uses under 18). The definition also influences whether certain types of work are considered child labor.
* Definition of "leaving school": This could mean dropping out completely or simply missing significant amounts of school due to work.
* Data collection challenges: Accurately tracking child labor is difficult, especially in informal economies and remote areas. Many cases go unreported.
While precise numbers are unavailable, reports from organizations like UNICEF, ILO (International Labour Organization), and various NGOs consistently show that millions of children globally leave school to work, often under hazardous conditions. The number is significantly high and represents a serious global issue. However, providing a specific number would be misleading due to the limitations mentioned above.