CCJ 1020 - Introduction to Criminal Justice Add to Personal Catalog CCJ 1020 - Introduction to Criminal Justice College Requirements Met: AATR An introduction to philosophical and historical backgrounds of agencies within the criminal justice system is studied. The organization, purpose, and function of the agencies of the criminal justice system in the United States are also presented in this career orientation course. Click here for the Summer 2026 Class Schedule Click here for the Fall 2026 Class Schedule