While it is impossible to know the true extent of the problem, given its illegal nature, International Labour Organization (ILO) global child labour figures for the year 2003 estimate that there are as many as 1.8 million children exploited in prostitution or pornography worldwide.
The Rapid Assessment survey, developed by the ILO's International Programme for the Elimination of Child Labour (IPEC) and UNICEF, relies on interviews and other, mainly qualitative, techniques, to provide a picture of a specific activity in a limited geographic area. It is a highly useful tool for collecting information on the worst forms of child labour, like CSEC, that is difficult to capture with standard quantitative surveys.
General knowledge offered to a child can decrease the likelihood of children being exploited into prostitution or pornography. A national campaign in Thailand provided “9 years of basic education, ... awareness-raising activities to change attitudes about child prostitution, and a surveillance system to prevent children from being coerced into prostitution.”