A report by Transparency International found that one in six students around the world had to pay a bribe in order to receive education services.
In addition to the bribes, corrupt actions taken by officials has prevented millions of dollars from reaching schools. In Kenya, funding that could be used to purchase up to 11 million textbooks are lost each year. In Tanzania, over one-third of the funding that was to be used for funding 180 schools is lost to corruption. In Nigeria, $21 Million that was meant for schools was lost to corruption in a span of 2 years.
Source: Sean Coughlan, “Corruption and bribery in the classroom,” BBC News, October 9, 2013.