Ratio of the number (total) of children enrolled during an academic year, regardless of age, at a certain education level, to the population of the age group that officially corresponds to the respective level.
Reference to education levels as follows:
Level 0 (Preschool Education: Kindergartens)
Level 1 (Primary Education or Low Basic Education)
Level 2 (Low Secondary Education or Higher Basic Education)
Level 1 + 2 (Basic Education)
Level 3 (High Secondary Education: High School / Vocational / Cultural Social)

Source: INSTAT / MES / MFE