Adult literacy rate in Mexico is 95.1%. Male literacy is 96.2%. Female literacy is 94.2%. Therefore, male literacy and female literacy differ by 2%. Government expenditure on education is 4.8% of GDP. The education index of Mexico is 0.638 - formal education levels in the country are average, but most of the population has a secondary school education at least; higher education is possible and not uncommon. People in Mexico speak the Spanish language.