Trivium, Latin, "the three ways" or "the three roads," the beginning studies of the Liberal arts.
In medieval educational theory the Trivium consisted of Grammar, Rhetoric, and Logic. These were considered preparatory fields for the Quadrivium, which was made up of Arithmetic, Geometry, Music, and Astronomy. In turn, the Quadrivium was considered preparatory work for the serious study of philosophy and theology.
This schema is sometimes referred to as Classical Education, but it is more accurately a development of the 12th and 13th centuries rather than an organic growth from the educational systems of antiquity.