Among people between the ages of 13 and 17 years, only 80% are full-time students in the education system; among them only 66% advance to secondary school. These percentages are lower among vulnerable population groups: only 75% of the poorest youth between the ages of 13 and 17 years attend school. Tertiary education has the lowest coverage, with only 70% of people between the ages of 18 and 25 years outside of the education system. Currently, more than half of low income children or living in rural areas fail to complete nine years of education.