According to Unesco's projections, the greatest challenges lie in sub-Saharan Africa, where more than 1m teaching posts will need to be created by 2015 to meet the needs of a growing number of primary students. Population growth and the push to get all children into school by 2015 has led enrolment rates to soar in many countries, but quality of education will remain a prime concern if countries fail to get enough teachers into classrooms. A total of 350,000 teachers should be hired in sub-Saharan Africa each year until 2015 to fill new posts and compensate for teachers expected to leave the workforce, said the report.