Adult literacy rate in Bangladesh is 71%. Male literacy is 70%. Female literacy is 66.5%. Therefore, male literacy and female literacy differ by 3.5%. Government expenditure on education is 2.4% of GDP. The education index of Bangladesh is 0.447 - formal education levels are low and are mostly limited to primary and secondary school levels at best; higher education is possible, but not very widespread. People in Bangladesh speak the Bengali language.