Child Labor and education

A recent study looked into education and studying among child laborers in Colombia.  The results of the study were overwhelmingly negative, of the 27% of workers that are child laborers, nearly none of them attend school or even had time to study.  These findings were somewhat surprising due to the fact that Colombia has child labor laws preventing children from working until the age of 16 and even then only with parent permission, they also only allow children to work 6 hour days until they are 18. Another finding from the same study found that the average child laborer in Colombia was only nine years old.

A child working in a Bolivian mine
What will Colombia due to fix this? should they require children to stay in school? How can Colombia preven Children as young as nine and younger from working in such hazardous conditions?