This is an interesting report in The Economist (Oct 15, p79): https://www.economist.com/graphic-detail/2022/10/13/demand-for-drugs-caused-a-surge-in-child-labour-in-peru

It outlines a study which showed that over 1997-2003, coca producers in Peru were increasingly using child labor to produce their crops, with depressing results. The child labor rate rose by 30 per cent in coca-producing areas, with a roughly equal proportion of children who dropped out of school. However, the introduction of a cash-transfer scheme which gave parents about $30 a month so long as their kids were in school, had strong results. In areas where this was deployed, coca production fell by 34 per cent.