An academy is an institution of secondary or tertiary higher learning. The name traces back to Plato's school of philosophy, founded approximately 386 BC at Akademia, a sanctuary of Athena, the goddess of wisdom and skill, north of Athens, Greece.
Plato's Academy mosaic from Pompeii
The School of Athens, fresco by Raphael (1509–1510), that depicts a congregation of philosophers, mathematicians, and scientists from Ancient Greece, including Plato, Aristotle, Pythagoras, Archimedes, and Heraclitus
Nalanda, ancient center of higher learning in Bihar, India from 427 to 1197
Established in 1224 by Frederick II, Holy Roman Emperor, University of Naples Federico II in Italy is the world's oldest state-funded academic institution in continuous operation.
Secondary education or post-primary education covers two phases on the International Standard Classification of Education scale. Level 2 or lower secondary education is considered the second and final phase of basic education, and level 3 upper secondary education or senior secondary education is the stage before tertiary education. Every country aims to provide basic education, but the systems and terminology remain unique to them. Secondary education typically takes place after six years of primary education and is followed by higher education, vocational education or employment. In most countries secondary education is compulsory, at least until the age of 16. Children typically enter the lower secondary phase around age 12. Compulsory education sometimes extends to age 20.
A high school senior classroom in the United States