However, there are still 23 million children in the region between the ages of 4 and 17 outside of the formal education system. Estimates indicate that 30% of preschool age children (ages 4–5) do not attend school, and for the most vulnerable populations, the poor and rural, this calculation exceeds 40 percent. Among primary school age children (ages 6 to 12), coverage is almost universal; however there is still a need to incorporate 5 million children in the primary education system. These children live mostly in remote areas, are indigenous or Afro-descendants and live in extreme poverty.