It includes all forms of preaching&colon; sermons, homilies and catechetical instruction. The Theological college of the catechetical school was re-established in 1893. The term "catechumen" refers to the designated recipient of the catechetical work or instruction. Henry also began giving catechetical lectures in London. This 16 page book of prayers and catechetical instructions was printed in Quilon. There is a catechetical programme for children. The basic process applies to adults and children who have reached catechetical age. Justin excerpted and rearranged the catechetical sayings material to create "Apol". He became head of the Catechetical School about 180. He followed Origen as head of the Catechetical School of Alexandria. Later scholars believed he was the head of the Catechetical School of Alexandria. St. Mark also appointed him as the first Dean of the Catechetical School of Alexandria. The Catechetical School of Alexandria is the oldest catechetical school in the world. The Catechetical School of Alexandria was the oldest catechetical school in the world.