I guess what you are asking about are the courses in Criminal Justice. Criminal Justice is one of the fastest growing fields in the job market across the country. Studying Criminal justice enables students choose from a wide spectrum of careers in this field depending on a student’s level of education. Having a master’s degree in criminal justice helps people get higher ranking positions in this field, such as an FBI agent. But even simple certifications which take only one year to complete can open many career avenues.