Out-of-school children are all those excluded from education at a given level of education

Seasonal migrants are persons employed in a State other than their own for part of the year because the work they perform depends on seasonal conditions

The requirement to present a birth certificate in order to enrol in school may be prescribed by local, regional or national law

Repetition rate is the proportion of pupils from a cohort enrolled in a given grade at a given school year of primary or secondary education who study in the same grade in the following school year (Source: UIS)

Percentage of population aged 15 years and over who can, with understanding, both read and write, a short simple statement on his / her everyday life. Generally, ‘literacy’ also encompasses ‘numeracy’, the ability to make simple arithmetic calculations (Source: UIS: p.3)

Secondary completion rate is the total number of graduates from the last grade of secondary education, regardless of age, expressed as a percentage of the population of the age group that officially corresponds to that of graduating from secondary schools

Primary completion rate is the percentage of students completing the last year of primary school. The UN defines it as: the total number of new entrants in the last grade of primary education, regardless of age, expressed as percentage of the total population of the theoretical entrance age to the last grade of primary. The ratio can exceed 100% due to over-aged and under-aged children who enter primary school late / early and / or repeat grades