The Catechetical School of Alexandria (founded c.a. 190) was and is a place for the training of Christian theologians and priests in Alexandria. The teachers and students of the school (also known as the Didascalium) were influential in many of the early theological controversies of the Christian church. The earliest recorded instructor at the school, and the probable founder, was Saint Pantaenus. He was succeeded as head of the school by his student Saint Clement.