The adult literacy rate in Tanzania is 70.6%. Male literacy is 75.9%. Female literacy is 65.4%. Therefore, the literacy of men and women differ by 10.5%. Government spending on education is 6.8% of GDP. Tanzania's education index is 0.426 – formal education levels are low and limited to primary and secondary school at best; Higher education is possible but not very common. The people of Tanzania speak Swahili and English.