In 2011, the net enrolment ratio for primary school was 85%. Approximately 90% of the total population over 15 years of age is literate, and roughly 25% of the population holds a college degree; a significant number of these college graduates hold doctorate degrees in different academic fields. Textbooks have been made available to 90 per cent of school children, and 98 per cent of the teachers have attended in-service teacher training. Although most children have access to education, some problems remain. For example, there is insufficient spending on school materials, lunches, and books.