Founded by the Church of Alexandria, Egypt in the latter half of 2nd century. There were lectures to which pagans were admitted, but advanced teaching was given to Christians separately. Under the bishop‘s supervision, the school prepared young clerics for the priesthood, studies including philosophy, theology, and Christian apologetics. Pantrenus, c.180, was the first teacher to make the school famous. He was succeeded by his pupil Saint Clement of Alexandria, followed by Origen. Of the succeeding teachers, Didymus the Blind (c.340-395) is the best known.