premise: Aristotle never entered formal education.
hypothesis: Aristotle . At seventeen or eighteen years of age , he joined Plato 's Academy in Athens and remained there until the age of thirty-seven ( c. 347 BC ) . Aristotle was well known among medieval Muslim intellectuals and revered as `` The First Teacher '' ( [ ) . Education in ancient Greece . There were two forms of education in ancient Greece : formal and informal . Open learning is an innovative movement in education that emerged in the 1970s and evolved into fields of practice and study .