From Ancient Greek σχολεῖον (skholeîon), from σχολή (skholḗ, “spare time, leisure", later, "conversations and the knowledge gained through them during free time; the places where these conversations took place”).
declension of σχολείο
- λύκειο n (lýkeio, “secondary school, high school”)
- γυμνάσιο n (gymnásio, “secondary school, high school”)
- δημοτικό σχολείο n (dimotikó scholeío, “primary school, elementary school”)