There is a great deal of confusion related to crime scene investigators and crime scene technicians. Crime scene technicians do not have to be a police officer to work the crime scenes, but they are usually specialists in fields like blood spatters, bodily fluids, ballistics, forensic pathology, fingerprints, and so on. Investigators, however, are usually sworn police officers with the power to make an arrest.
Becoming a sworn officer is the easiest, quickest, and most successful way to become a CSI.
Don’t expect to jump right out of high school (or college for that matter) and become a CSI your first day on the job. Because of the extremely sensitive daily job of CSI’s, you will need to develop extensive knowledge of the legal system, laws, and law enforcement before you can succeed in investigating crime scenes. Remember, CSI’s have a huge responsibility of solving delicate crimes and serving justice to the victims so you will want to earn the respect of all who depend on you.