Ludi magister
A ludi magister was a teacher at a Roman school (Ludus). Magistri were often Greek or other educated slaves. The ludi magister was the teacher of the first stage of Roman education, the equivalent of an elementary school teacher. He would have a class of around thirty students. Students would go to a ludi magister at multiple ages and leave at the age of eleven. Classes would be held in a room rented by the ludi magister or outside.