To become a correctional officer at a federal prison, applicants should meet the minimum requirements of being between 18 and 36 years old, a U.S. citizen, possessing a valid driver's license, and acquiring a bachelor's degree. Higher pay scales are awarded to those with some graduate school experience in a field of study like criminal justice, criminology, social science, or law. Those wishing to work in a federal prison should also have some hands-on practical experience in law enforcement of corrections. This ensures an ability to perform the job duties. Aspiring correctional officers must take a written general knowledge examination, a vision test, and a physical fitness test. Upon completion of these steps, you may receive a job offer and will be expected to attend specialized training.