Compulsory education in Greece comprises primary schools (Δημοτικό Σχολείο, ''Dimotikó Scholeio'') and gymnasium (Γυμνάσιο). Nursery schools (Παιδικός σταθμός, ''Paidikós Stathmós'') are popular but not compulsory. Kindergartens (Νηπιαγωγείο, ''Nipiagogeío'') are now compulsory for any child above four years of age. Children start primary school aged six and remain there for six years. Attendance at gymnasia starts at age 12 and lasts for three years.