There are no universal educational requirements for homicide detectives. Each law enforcement organization determines its own set of hiring requirements; some departments accept applicants with only a high school diploma, while others look for candidates with college experience.
Police departments generally require recruits to attend a training academy before they become officers or detectives. Additionally, police departments provide on-the-job training for applicants who meet the requirements for specific positions.
Some police departments look for candidates with associate's or bachelor's degrees in an applicable area, such as criminal justice. Detectives almost always start out as police officers, and then earn promotions through exemplary performance.