Education is priority number one in Tanzania: the education budget has grown, primary school enrolment is close to universal, and secondary school enrolment is expanding fast. But, writes Rakesh Rajani, head of Twaweza, a ten-year initiative to promote citizen agency and improved service delivery in East Africa, millions of children are not learning. 'According to the large-scale and independent Uwezo Survey, 7 out of every 10 children in Grade 3 cannot read Swahili at their level, 8 out of 10 cannot do math and 9 out of 10 cannot read English. Even after seven years, when they have completed primary schooling, half the children cannot read Grade 2-level English.' So, after 50-odd years of advice and studies and reforms and programmes, why have the experts not managed to deliver a system where children are learning?